diff options
| author | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2014-05-07 08:11:03 +0000 |
|---|---|---|
| committer | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2014-05-07 08:11:03 +0000 |
| commit | bec915e05274a94f2b1a5e2443f04de826dd1f6e (patch) | |
| tree | cec2044911766f5dc5a7bd8b8c9ffe0fe81734f8 /os/kernel/src | |
| parent | 4afa0b98dff9eac6a94c104acf900e15147d2da3 (diff) | |
| parent | b43c71424d201583822b26d13d11f7e3634cb515 (diff) | |
| download | ChibiOS-bec915e05274a94f2b1a5e2443f04de826dd1f6e.tar.gz ChibiOS-bec915e05274a94f2b1a5e2443f04de826dd1f6e.tar.bz2 ChibiOS-bec915e05274a94f2b1a5e2443f04de826dd1f6e.zip | |
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@6916 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'os/kernel/src')
| -rw-r--r-- | os/kernel/src/chcond.c | 285 | ||||
| -rw-r--r-- | os/kernel/src/chdebug.c | 271 | ||||
| -rw-r--r-- | os/kernel/src/chdynamic.c | 204 | ||||
| -rw-r--r-- | os/kernel/src/chevents.c | 548 | ||||
| -rw-r--r-- | os/kernel/src/chheap.c | 318 | ||||
| -rw-r--r-- | os/kernel/src/chlists.c | 156 | ||||
| -rw-r--r-- | os/kernel/src/chmboxes.c | 376 | ||||
| -rw-r--r-- | os/kernel/src/chmemcore.c | 131 | ||||
| -rw-r--r-- | os/kernel/src/chmempools.c | 173 | ||||
| -rw-r--r-- | os/kernel/src/chmsg.c | 132 | ||||
| -rw-r--r-- | os/kernel/src/chmtx.c | 393 | ||||
| -rw-r--r-- | os/kernel/src/chqueues.c | 431 | ||||
| -rw-r--r-- | os/kernel/src/chregistry.c | 156 | ||||
| -rw-r--r-- | os/kernel/src/chschd.c | 378 | ||||
| -rw-r--r-- | os/kernel/src/chsem.c | 393 | ||||
| -rw-r--r-- | os/kernel/src/chsys.c | 149 | ||||
| -rw-r--r-- | os/kernel/src/chthreads.c | 436 | ||||
| -rw-r--r-- | os/kernel/src/chvt.c | 114 |
18 files changed, 0 insertions, 5044 deletions
diff --git a/os/kernel/src/chcond.c b/os/kernel/src/chcond.c deleted file mode 100644 index c217bf6fd..000000000 --- a/os/kernel/src/chcond.c +++ /dev/null @@ -1,285 +0,0 @@ -/*
- ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
- 2011,2012,2013 Giovanni Di Sirio.
-
- This file is part of ChibiOS/RT.
-
- ChibiOS/RT is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- ChibiOS/RT is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-/*
- Concepts and parts of this file have been contributed by Leon Woestenberg.
- */
-
-/**
- * @file chcond.c
- * @brief Condition Variables code.
- *
- * @addtogroup condvars Condition Variables
- * @details This module implements the Condition Variables mechanism. Condition
- * variables are an extensions to the Mutex subsystem and cannot
- * work alone.
- * <h2>Operation mode</h2>
- * The condition variable is a synchronization object meant to be
- * used inside a zone protected by a @p Mutex. Mutexes and CondVars
- * together can implement a Monitor construct.
- * @pre In order to use the condition variable APIs the @p CH_USE_CONDVARS
- * option must be enabled in @p chconf.h.
- * @{
- */
-
-#include "ch.h"
-
-#if (CH_USE_CONDVARS && CH_USE_MUTEXES) || defined(__DOXYGEN__)
-
-/**
- * @brief Initializes s @p CondVar structure.
- *
- * @param[out] cp pointer to a @p CondVar structure
- *
- * @init
- */
-void chCondInit(CondVar *cp) {
-
- chDbgCheck(cp != NULL, "chCondInit");
-
- queue_init(&cp->c_queue);
-}
-
-/**
- * @brief Signals one thread that is waiting on the condition variable.
- *
- * @param[in] cp pointer to the @p CondVar structure
- *
- * @api
- */
-void chCondSignal(CondVar *cp) {
-
- chDbgCheck(cp != NULL, "chCondSignal");
-
- chSysLock();
- if (notempty(&cp->c_queue))
- chSchWakeupS(fifo_remove(&cp->c_queue), RDY_OK);
- chSysUnlock();
-}
-
-/**
- * @brief Signals one thread that is waiting on the condition variable.
- * @post This function does not reschedule so a call to a rescheduling
- * function must be performed before unlocking the kernel. Note that
- * interrupt handlers always reschedule on exit so an explicit
- * reschedule must not be performed in ISRs.
- *
- * @param[in] cp pointer to the @p CondVar structure
- *
- * @iclass
- */
-void chCondSignalI(CondVar *cp) {
-
- chDbgCheckClassI();
- chDbgCheck(cp != NULL, "chCondSignalI");
-
- if (notempty(&cp->c_queue))
- chSchReadyI(fifo_remove(&cp->c_queue))->p_u.rdymsg = RDY_OK;
-}
-
-/**
- * @brief Signals all threads that are waiting on the condition variable.
- *
- * @param[in] cp pointer to the @p CondVar structure
- *
- * @api
- */
-void chCondBroadcast(CondVar *cp) {
-
- chSysLock();
- chCondBroadcastI(cp);
- chSchRescheduleS();
- chSysUnlock();
-}
-
-/**
- * @brief Signals all threads that are waiting on the condition variable.
- * @post This function does not reschedule so a call to a rescheduling
- * function must be performed before unlocking the kernel. Note that
- * interrupt handlers always reschedule on exit so an explicit
- * reschedule must not be performed in ISRs.
- *
- * @param[in] cp pointer to the @p CondVar structure
- *
- * @iclass
- */
-void chCondBroadcastI(CondVar *cp) {
-
- chDbgCheckClassI();
- chDbgCheck(cp != NULL, "chCondBroadcastI");
-
- /* Empties the condition variable queue and inserts all the Threads into the
- ready list in FIFO order. The wakeup message is set to @p RDY_RESET in
- order to make a chCondBroadcast() detectable from a chCondSignal().*/
- while (cp->c_queue.p_next != (void *)&cp->c_queue)
- chSchReadyI(fifo_remove(&cp->c_queue))->p_u.rdymsg = RDY_RESET;
-}
-
-/**
- * @brief Waits on the condition variable releasing the mutex lock.
- * @details Releases the currently owned mutex, waits on the condition
- * variable, and finally acquires the mutex again. All the sequence
- * is performed atomically.
- * @pre The invoking thread <b>must</b> have at least one owned mutex.
- *
- * @param[in] cp pointer to the @p CondVar structure
- * @return A message specifying how the invoking thread has been
- * released from the condition variable.
- * @retval RDY_OK if the condvar has been signaled using
- * @p chCondSignal().
- * @retval RDY_RESET if the condvar has been signaled using
- * @p chCondBroadcast().
- *
- * @api
- */
-msg_t chCondWait(CondVar *cp) {
- msg_t msg;
-
- chSysLock();
- msg = chCondWaitS(cp);
- chSysUnlock();
- return msg;
-}
-
-/**
- * @brief Waits on the condition variable releasing the mutex lock.
- * @details Releases the currently owned mutex, waits on the condition
- * variable, and finally acquires the mutex again. All the sequence
- * is performed atomically.
- * @pre The invoking thread <b>must</b> have at least one owned mutex.
- *
- * @param[in] cp pointer to the @p CondVar structure
- * @return A message specifying how the invoking thread has been
- * released from the condition variable.
- * @retval RDY_OK if the condvar has been signaled using
- * @p chCondSignal().
- * @retval RDY_RESET if the condvar has been signaled using
- * @p chCondBroadcast().
- *
- * @sclass
- */
-msg_t chCondWaitS(CondVar *cp) {
- Thread *ctp = currp;
- Mutex *mp;
- msg_t msg;
-
- chDbgCheckClassS();
- chDbgCheck(cp != NULL, "chCondWaitS");
- chDbgAssert(ctp->p_mtxlist != NULL,
- "chCondWaitS(), #1",
- "not owning a mutex");
-
- mp = chMtxUnlockS();
- ctp->p_u.wtobjp = cp;
- prio_insert(ctp, &cp->c_queue);
- chSchGoSleepS(THD_STATE_WTCOND);
- msg = ctp->p_u.rdymsg;
- chMtxLockS(mp);
- return msg;
-}
-
-#if CH_USE_CONDVARS_TIMEOUT || defined(__DOXYGEN__)
-/**
- * @brief Waits on the condition variable releasing the mutex lock.
- * @details Releases the currently owned mutex, waits on the condition
- * variable, and finally acquires the mutex again. All the sequence
- * is performed atomically.
- * @pre The invoking thread <b>must</b> have at least one owned mutex.
- * @pre The configuration option @p CH_USE_CONDVARS_TIMEOUT must be enabled
- * in order to use this function.
- * @post Exiting the function because a timeout does not re-acquire the
- * mutex, the mutex ownership is lost.
- *
- * @param[in] cp pointer to the @p CondVar structure
- * @param[in] time the number of ticks before the operation timeouts, the
- * special values are handled as follow:
- * - @a TIME_INFINITE no timeout.
- * - @a TIME_IMMEDIATE this value is not allowed.
- * .
- * @return A message specifying how the invoking thread has been
- * released from the condition variable.
- * @retval RDY_OK if the condvar has been signaled using
- * @p chCondSignal().
- * @retval RDY_RESET if the condvar has been signaled using
- * @p chCondBroadcast().
- * @retval RDY_TIMEOUT if the condvar has not been signaled within the
- * specified timeout.
- *
- * @api
- */
-msg_t chCondWaitTimeout(CondVar *cp, systime_t time) {
- msg_t msg;
-
- chSysLock();
- msg = chCondWaitTimeoutS(cp, time);
- chSysUnlock();
- return msg;
-}
-
-/**
- * @brief Waits on the condition variable releasing the mutex lock.
- * @details Releases the currently owned mutex, waits on the condition
- * variable, and finally acquires the mutex again. All the sequence
- * is performed atomically.
- * @pre The invoking thread <b>must</b> have at least one owned mutex.
- * @pre The configuration option @p CH_USE_CONDVARS_TIMEOUT must be enabled
- * in order to use this function.
- * @post Exiting the function because a timeout does not re-acquire the
- * mutex, the mutex ownership is lost.
- *
- * @param[in] cp pointer to the @p CondVar structure
- * @param[in] time the number of ticks before the operation timeouts, the
- * special values are handled as follow:
- * - @a TIME_INFINITE no timeout.
- * - @a TIME_IMMEDIATE this value is not allowed.
- * .
- * @return A message specifying how the invoking thread has been
- * released from the condition variable.
- * @retval RDY_OK if the condvar has been signaled using
- * @p chCondSignal().
- * @retval RDY_RESET if the condvar has been signaled using
- * @p chCondBroadcast().
- * @retval RDY_TIMEOUT if the condvar has not been signaled within the
- * specified timeout.
- *
- * @sclass
- */
-msg_t chCondWaitTimeoutS(CondVar *cp, systime_t time) {
- Mutex *mp;
- msg_t msg;
-
- chDbgCheckClassS();
- chDbgCheck((cp != NULL) && (time != TIME_IMMEDIATE), "chCondWaitTimeoutS");
- chDbgAssert(currp->p_mtxlist != NULL,
- "chCondWaitTimeoutS(), #1",
- "not owning a mutex");
-
- mp = chMtxUnlockS();
- currp->p_u.wtobjp = cp;
- prio_insert(currp, &cp->c_queue);
- msg = chSchGoSleepTimeoutS(THD_STATE_WTCOND, time);
- if (msg != RDY_TIMEOUT)
- chMtxLockS(mp);
- return msg;
-}
-#endif /* CH_USE_CONDVARS_TIMEOUT */
-
-#endif /* CH_USE_CONDVARS && CH_USE_MUTEXES */
-
-/** @} */
diff --git a/os/kernel/src/chdebug.c b/os/kernel/src/chdebug.c deleted file mode 100644 index c69ce8f3f..000000000 --- a/os/kernel/src/chdebug.c +++ /dev/null @@ -1,271 +0,0 @@ -/*
- ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
- 2011,2012,2013 Giovanni Di Sirio.
-
- This file is part of ChibiOS/RT.
-
- ChibiOS/RT is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- ChibiOS/RT is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-/**
- * @file chdebug.c
- * @brief ChibiOS/RT Debug code.
- *
- * @addtogroup debug
- * @details Debug APIs and services:
- * - Runtime system state and call protocol check. The following
- * panic messages can be generated:
- * - SV#1, misplaced @p chSysDisable().
- * - SV#2, misplaced @p chSysSuspend()
- * - SV#3, misplaced @p chSysEnable().
- * - SV#4, misplaced @p chSysLock().
- * - SV#5, misplaced @p chSysUnlock().
- * - SV#6, misplaced @p chSysLockFromIsr().
- * - SV#7, misplaced @p chSysUnlockFromIsr().
- * - SV#8, misplaced @p CH_IRQ_PROLOGUE().
- * - SV#9, misplaced @p CH_IRQ_EPILOGUE().
- * - SV#10, misplaced I-class function.
- * - SV#11, misplaced S-class function.
- * .
- * - Trace buffer.
- * - Parameters check.
- * - Kernel assertions.
- * - Kernel panics.
- * .
- * @note Stack checks are not implemented in this module but in the port
- * layer in an architecture-dependent way.
- * @{
- */
-
-#include "ch.h"
-
-/*===========================================================================*/
-/* System state checker related code and variables. */
-/*===========================================================================*/
-
-#if CH_DBG_SYSTEM_STATE_CHECK || defined(__DOXYGEN__)
-
-/**
- * @brief ISR nesting level.
- */
-cnt_t dbg_isr_cnt;
-
-/**
- * @brief Lock nesting level.
- */
-cnt_t dbg_lock_cnt;
-
-/**
- * @brief Guard code for @p chSysDisable().
- *
- * @notapi
- */
-void dbg_check_disable(void) {
-
- if ((dbg_isr_cnt != 0) || (dbg_lock_cnt != 0))
- chDbgPanic("SV#1");
-}
-
-/**
- * @brief Guard code for @p chSysSuspend().
- *
- * @notapi
- */
-void dbg_check_suspend(void) {
-
- if ((dbg_isr_cnt != 0) || (dbg_lock_cnt != 0))
- chDbgPanic("SV#2");
-}
-
-/**
- * @brief Guard code for @p chSysEnable().
- *
- * @notapi
- */
-void dbg_check_enable(void) {
-
- if ((dbg_isr_cnt != 0) || (dbg_lock_cnt != 0))
- chDbgPanic("SV#3");
-}
-
-/**
- * @brief Guard code for @p chSysLock().
- *
- * @notapi
- */
-void dbg_check_lock(void) {
-
- if ((dbg_isr_cnt != 0) || (dbg_lock_cnt != 0))
- chDbgPanic("SV#4");
- dbg_enter_lock();
-}
-
-/**
- * @brief Guard code for @p chSysUnlock().
- *
- * @notapi
- */
-void dbg_check_unlock(void) {
-
- if ((dbg_isr_cnt != 0) || (dbg_lock_cnt <= 0))
- chDbgPanic("SV#5");
- dbg_leave_lock();
-}
-
-/**
- * @brief Guard code for @p chSysLockFromIsr().
- *
- * @notapi
- */
-void dbg_check_lock_from_isr(void) {
-
- if ((dbg_isr_cnt <= 0) || (dbg_lock_cnt != 0))
- chDbgPanic("SV#6");
- dbg_enter_lock();
-}
-
-/**
- * @brief Guard code for @p chSysUnlockFromIsr().
- *
- * @notapi
- */
-void dbg_check_unlock_from_isr(void) {
-
- if ((dbg_isr_cnt <= 0) || (dbg_lock_cnt <= 0))
- chDbgPanic("SV#7");
- dbg_leave_lock();
-}
-
-/**
- * @brief Guard code for @p CH_IRQ_PROLOGUE().
- *
- * @notapi
- */
-void dbg_check_enter_isr(void) {
-
- port_lock_from_isr();
- if ((dbg_isr_cnt < 0) || (dbg_lock_cnt != 0))
- chDbgPanic("SV#8");
- dbg_isr_cnt++;
- port_unlock_from_isr();
-}
-
-/**
- * @brief Guard code for @p CH_IRQ_EPILOGUE().
- *
- * @notapi
- */
-void dbg_check_leave_isr(void) {
-
- port_lock_from_isr();
- if ((dbg_isr_cnt <= 0) || (dbg_lock_cnt != 0))
- chDbgPanic("SV#9");
- dbg_isr_cnt--;
- port_unlock_from_isr();
-}
-
-/**
- * @brief I-class functions context check.
- * @details Verifies that the system is in an appropriate state for invoking
- * an I-class API function. A panic is generated if the state is
- * not compatible.
- *
- * @api
- */
-void chDbgCheckClassI(void) {
-
- if ((dbg_isr_cnt < 0) || (dbg_lock_cnt <= 0))
- chDbgPanic("SV#10");
-}
-
-/**
- * @brief S-class functions context check.
- * @details Verifies that the system is in an appropriate state for invoking
- * an S-class API function. A panic is generated if the state is
- * not compatible.
- *
- * @api
- */
-void chDbgCheckClassS(void) {
-
- if ((dbg_isr_cnt != 0) || (dbg_lock_cnt <= 0))
- chDbgPanic("SV#11");
-}
-
-#endif /* CH_DBG_SYSTEM_STATE_CHECK */
-
-/*===========================================================================*/
-/* Trace related code and variables. */
-/*===========================================================================*/
-
-#if CH_DBG_ENABLE_TRACE || defined(__DOXYGEN__)
-/**
- * @brief Public trace buffer.
- */
-ch_trace_buffer_t dbg_trace_buffer;
-
-/**
- * @brief Trace circular buffer subsystem initialization.
- * @note Internal use only.
- */
-void _trace_init(void) {
-
- dbg_trace_buffer.tb_size = CH_TRACE_BUFFER_SIZE;
- dbg_trace_buffer.tb_ptr = &dbg_trace_buffer.tb_buffer[0];
-}
-
-/**
- * @brief Inserts in the circular debug trace buffer a context switch record.
- *
- * @param[in] otp the thread being switched out
- *
- * @notapi
- */
-void dbg_trace(Thread *otp) {
-
- dbg_trace_buffer.tb_ptr->se_time = chTimeNow();
- dbg_trace_buffer.tb_ptr->se_tp = currp;
- dbg_trace_buffer.tb_ptr->se_wtobjp = otp->p_u.wtobjp;
- dbg_trace_buffer.tb_ptr->se_state = (uint8_t)otp->p_state;
- if (++dbg_trace_buffer.tb_ptr >=
- &dbg_trace_buffer.tb_buffer[CH_TRACE_BUFFER_SIZE])
- dbg_trace_buffer.tb_ptr = &dbg_trace_buffer.tb_buffer[0];
-}
-#endif /* CH_DBG_ENABLE_TRACE */
-
-/*===========================================================================*/
-/* Panic related code and variables. */
-/*===========================================================================*/
-
-#if CH_DBG_ENABLED || defined(__DOXYGEN__)
-/**
- * @brief Pointer to the panic message.
- * @details This pointer is meant to be accessed through the debugger, it is
- * written once and then the system is halted.
- */
-const char *dbg_panic_msg;
-
-/**
- * @brief Prints a panic message on the console and then halts the system.
- *
- * @param[in] msg the pointer to the panic message string
- */
-void chDbgPanic(const char *msg) {
-
- dbg_panic_msg = msg;
- chSysHalt();
-}
-#endif /* CH_DBG_ENABLED */
-
-/** @} */
diff --git a/os/kernel/src/chdynamic.c b/os/kernel/src/chdynamic.c deleted file mode 100644 index 632367ca1..000000000 --- a/os/kernel/src/chdynamic.c +++ /dev/null @@ -1,204 +0,0 @@ -/*
- ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
- 2011,2012,2013 Giovanni Di Sirio.
-
- This file is part of ChibiOS/RT.
-
- ChibiOS/RT is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- ChibiOS/RT is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-/**
- * @file chdynamic.c
- * @brief Dynamic threads code.
- *
- * @addtogroup dynamic_threads
- * @details Dynamic threads related APIs and services.
- * @{
- */
-
-#include "ch.h"
-
-#if CH_USE_DYNAMIC || defined(__DOXYGEN__)
-
-/**
- * @brief Adds a reference to a thread object.
- * @pre The configuration option @p CH_USE_DYNAMIC must be enabled in order
- * to use this function.
- *
- * @param[in] tp pointer to the thread
- * @return The same thread pointer passed as parameter
- * representing the new reference.
- *
- * @api
- */
-Thread *chThdAddRef(Thread *tp) {
-
- chSysLock();
- chDbgAssert(tp->p_refs < 255, "chThdAddRef(), #1", "too many references");
- tp->p_refs++;
- chSysUnlock();
- return tp;
-}
-
-/**
- * @brief Releases a reference to a thread object.
- * @details If the references counter reaches zero <b>and</b> the thread
- * is in the @p THD_STATE_FINAL state then the thread's memory is
- * returned to the proper allocator.
- * @pre The configuration option @p CH_USE_DYNAMIC must be enabled in order
- * to use this function.
- * @note Static threads are not affected.
- *
- * @param[in] tp pointer to the thread
- *
- * @api
- */
-void chThdRelease(Thread *tp) {
- trefs_t refs;
-
- chSysLock();
- chDbgAssert(tp->p_refs > 0, "chThdRelease(), #1", "not referenced");
- refs = --tp->p_refs;
- chSysUnlock();
-
- /* If the references counter reaches zero and the thread is in its
- terminated state then the memory can be returned to the proper
- allocator. Of course static threads are not affected.*/
- if ((refs == 0) && (tp->p_state == THD_STATE_FINAL)) {
- switch (tp->p_flags & THD_MEM_MODE_MASK) {
-#if CH_USE_HEAP
- case THD_MEM_MODE_HEAP:
-#if CH_USE_REGISTRY
- REG_REMOVE(tp);
-#endif
- chHeapFree(tp);
- break;
-#endif
-#if CH_USE_MEMPOOLS
- case THD_MEM_MODE_MEMPOOL:
-#if CH_USE_REGISTRY
- REG_REMOVE(tp);
-#endif
- chPoolFree(tp->p_mpool, tp);
- break;
-#endif
- }
- }
-}
-
-#if CH_USE_HEAP || defined(__DOXYGEN__)
-/**
- * @brief Creates a new thread allocating the memory from the heap.
- * @pre The configuration options @p CH_USE_DYNAMIC and @p CH_USE_HEAP
- * must be enabled in order to use this function.
- * @note A thread can terminate by calling @p chThdExit() or by simply
- * returning from its main function.
- * @note The memory allocated for the thread is not released when the thread
- * terminates but when a @p chThdWait() is performed.
- *
- * @param[in] heapp heap from which allocate the memory or @p NULL for the
- * default heap
- * @param[in] size size of the working area to be allocated
- * @param[in] prio the priority level for the new thread
- * @param[in] pf the thread function
- * @param[in] arg an argument passed to the thread function. It can be
- * @p NULL.
- * @return The pointer to the @p Thread structure allocated for
- * the thread into the working space area.
- * @retval NULL if the memory cannot be allocated.
- *
- * @api
- */
-Thread *chThdCreateFromHeap(MemoryHeap *heapp, size_t size,
- tprio_t prio, tfunc_t pf, void *arg) {
- void *wsp;
- Thread *tp;
-
- wsp = chHeapAlloc(heapp, size);
- if (wsp == NULL)
- return NULL;
-
-#if CH_DBG_FILL_THREADS
- _thread_memfill((uint8_t *)wsp,
- (uint8_t *)wsp + sizeof(Thread),
- CH_THREAD_FILL_VALUE);
- _thread_memfill((uint8_t *)wsp + sizeof(Thread),
- (uint8_t *)wsp + size,
- CH_STACK_FILL_VALUE);
-#endif
-
- chSysLock();
- tp = chThdCreateI(wsp, size, prio, pf, arg);
- tp->p_flags = THD_MEM_MODE_HEAP;
- chSchWakeupS(tp, RDY_OK);
- chSysUnlock();
- return tp;
-}
-#endif /* CH_USE_HEAP */
-
-#if CH_USE_MEMPOOLS || defined(__DOXYGEN__)
-/**
- * @brief Creates a new thread allocating the memory from the specified
- * memory pool.
- * @pre The configuration options @p CH_USE_DYNAMIC and @p CH_USE_MEMPOOLS
- * must be enabled in order to use this function.
- * @note A thread can terminate by calling @p chThdExit() or by simply
- * returning from its main function.
- * @note The memory allocated for the thread is not released when the thread
- * terminates but when a @p chThdWait() is performed.
- *
- * @param[in] mp pointer to the memory pool object
- * @param[in] prio the priority level for the new thread
- * @param[in] pf the thread function
- * @param[in] arg an argument passed to the thread function. It can be
- * @p NULL.
- * @return The pointer to the @p Thread structure allocated for
- * the thread into the working space area.
- * @retval NULL if the memory pool is empty.
- *
- * @api
- */
-Thread *chThdCreateFromMemoryPool(MemoryPool *mp, tprio_t prio,
- tfunc_t pf, void *arg) {
- void *wsp;
- Thread *tp;
-
- chDbgCheck(mp != NULL, "chThdCreateFromMemoryPool");
-
- wsp = chPoolAlloc(mp);
- if (wsp == NULL)
- return NULL;
-
-#if CH_DBG_FILL_THREADS
- _thread_memfill((uint8_t *)wsp,
- (uint8_t *)wsp + sizeof(Thread),
- CH_THREAD_FILL_VALUE);
- _thread_memfill((uint8_t *)wsp + sizeof(Thread),
- (uint8_t *)wsp + mp->mp_object_size,
- CH_STACK_FILL_VALUE);
-#endif
-
- chSysLock();
- tp = chThdCreateI(wsp, mp->mp_object_size, prio, pf, arg);
- tp->p_flags = THD_MEM_MODE_MEMPOOL;
- tp->p_mpool = mp;
- chSchWakeupS(tp, RDY_OK);
- chSysUnlock();
- return tp;
-}
-#endif /* CH_USE_MEMPOOLS */
-
-#endif /* CH_USE_DYNAMIC */
-
-/** @} */
diff --git a/os/kernel/src/chevents.c b/os/kernel/src/chevents.c deleted file mode 100644 index c79c60e2b..000000000 --- a/os/kernel/src/chevents.c +++ /dev/null @@ -1,548 +0,0 @@ -/*
- ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
- 2011,2012,2013 Giovanni Di Sirio.
-
- This file is part of ChibiOS/RT.
-
- ChibiOS/RT is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- ChibiOS/RT is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-/*
- Concepts and parts of this file have been contributed by Scott (skute).
- */
-
-/**
- * @file chevents.c
- * @brief Events code.
- *
- * @addtogroup events
- * @details Event Flags, Event Sources and Event Listeners.
- * <h2>Operation mode</h2>
- * Each thread has a mask of pending event flags inside its @p Thread
- * structure.
- * Operations defined for event flags:
- * - <b>Wait</b>, the invoking thread goes to sleep until a certain
- * AND/OR combination of event flags becomes pending.
- * - <b>Clear</b>, a mask of event flags is cleared from the pending
- * events mask, the cleared event flags mask is returned (only the
- * flags that were actually pending and then cleared).
- * - <b>Signal</b>, an event mask is directly ORed to the mask of the
- * signaled thread.
- * - <b>Broadcast</b>, each thread registered on an Event Source is
- * signaled with the event flags specified in its Event Listener.
- * - <b>Dispatch</b>, an events mask is scanned and for each bit set
- * to one an associated handler function is invoked. Bit masks are
- * scanned from bit zero upward.
- * .
- * An Event Source is a special object that can be "broadcasted" by
- * a thread or an interrupt service routine. Broadcasting an Event
- * Source has the effect that all the threads registered on the
- * Event Source will be signaled with an events mask.<br>
- * An unlimited number of Event Sources can exists in a system and
- * each thread can be listening on an unlimited number of
- * them.
- * @pre In order to use the Events APIs the @p CH_USE_EVENTS option must be
- * enabled in @p chconf.h.
- * @post Enabling events requires 1-4 (depending on the architecture)
- * extra bytes in the @p Thread structure.
- * @{
- */
-
-#include "ch.h"
-
-#if CH_USE_EVENTS || defined(__DOXYGEN__)
-/**
- * @brief Registers an Event Listener on an Event Source.
- * @details Once a thread has registered as listener on an event source it
- * will be notified of all events broadcasted there.
- * @note Multiple Event Listeners can specify the same bits to be ORed to
- * different threads.
- *
- * @param[in] esp pointer to the @p EventSource structure
- * @param[out] elp pointer to the @p EventListener structure
- * @param[in] mask the mask of event flags to be ORed to the thread when
- * the event source is broadcasted
- *
- * @api
- */
-void chEvtRegisterMask(EventSource *esp, EventListener *elp, eventmask_t mask) {
-
- chDbgCheck((esp != NULL) && (elp != NULL), "chEvtRegisterMask");
-
- chSysLock();
- elp->el_next = esp->es_next;
- esp->es_next = elp;
- elp->el_listener = currp;
- elp->el_mask = mask;
- elp->el_flags = 0;
- chSysUnlock();
-}
-
-/**
- * @brief Unregisters an Event Listener from its Event Source.
- * @note If the event listener is not registered on the specified event
- * source then the function does nothing.
- * @note For optimal performance it is better to perform the unregister
- * operations in inverse order of the register operations (elements
- * are found on top of the list).
- *
- * @param[in] esp pointer to the @p EventSource structure
- * @param[in] elp pointer to the @p EventListener structure
- *
- * @api
- */
-void chEvtUnregister(EventSource *esp, EventListener *elp) {
- EventListener *p;
-
- chDbgCheck((esp != NULL) && (elp != NULL), "chEvtUnregister");
-
- p = (EventListener *)esp;
- chSysLock();
- while (p->el_next != (EventListener *)esp) {
- if (p->el_next == elp) {
- p->el_next = elp->el_next;
- break;
- }
- p = p->el_next;
- }
- chSysUnlock();
-}
-
-/**
- * @brief Clears the pending events specified in the mask.
- *
- * @param[in] mask the events to be cleared
- * @return The pending events that were cleared.
- *
- * @api
- */
-eventmask_t chEvtGetAndClearEvents(eventmask_t mask) {
- eventmask_t m;
-
- chSysLock();
-
- m = currp->p_epending & mask;
- currp->p_epending &= ~mask;
-
- chSysUnlock();
- return m;
-}
-
-/**
- * @brief Adds (OR) a set of event flags on the current thread, this is
- * @b much faster than using @p chEvtBroadcast() or @p chEvtSignal().
- *
- * @param[in] mask the event flags to be added
- * @return The current pending events mask.
- *
- * @api
- */
-eventmask_t chEvtAddEvents(eventmask_t mask) {
-
- chSysLock();
-
- mask = (currp->p_epending |= mask);
-
- chSysUnlock();
- return mask;
-}
-
-/**
- * @brief Signals all the Event Listeners registered on the specified Event
- * Source.
- * @details This function variants ORs the specified event flags to all the
- * threads registered on the @p EventSource in addition to the event
- * flags specified by the threads themselves in the
- * @p EventListener objects.
- * @post This function does not reschedule so a call to a rescheduling
- * function must be performed before unlocking the kernel. Note that
- * interrupt handlers always reschedule on exit so an explicit
- * reschedule must not be performed in ISRs.
- *
- * @param[in] esp pointer to the @p EventSource structure
- * @param[in] flags the flags set to be added to the listener flags mask
- *
- * @iclass
- */
-void chEvtBroadcastFlagsI(EventSource *esp, flagsmask_t flags) {
- EventListener *elp;
-
- chDbgCheckClassI();
- chDbgCheck(esp != NULL, "chEvtBroadcastMaskI");
-
- elp = esp->es_next;
- while (elp != (EventListener *)esp) {
- elp->el_flags |= flags;
- chEvtSignalI(elp->el_listener, elp->el_mask);
- elp = elp->el_next;
- }
-}
-
-/**
- * @brief Returns the flags associated to an @p EventListener.
- * @details The flags are returned and the @p EventListener flags mask is
- * cleared.
- *
- * @param[in] elp pointer to the @p EventListener structure
- * @return The flags added to the listener by the associated
- * event source.
- *
- * @api
- */
-flagsmask_t chEvtGetAndClearFlags(EventListener *elp) {
- flagsmask_t flags;
-
- chSysLock();
-
- flags = elp->el_flags;
- elp->el_flags = 0;
-
- chSysUnlock();
- return flags;
-}
-
-/**
- * @brief Adds a set of event flags directly to specified @p Thread.
- *
- * @param[in] tp the thread to be signaled
- * @param[in] mask the event flags set to be ORed
- *
- * @api
- */
-void chEvtSignal(Thread *tp, eventmask_t mask) {
-
- chDbgCheck(tp != NULL, "chEvtSignal");
-
- chSysLock();
- chEvtSignalI(tp, mask);
- chSchRescheduleS();
- chSysUnlock();
-}
-
-/**
- * @brief Adds a set of event flags directly to specified @p Thread.
- * @post This function does not reschedule so a call to a rescheduling
- * function must be performed before unlocking the kernel. Note that
- * interrupt handlers always reschedule on exit so an explicit
- * reschedule must not be performed in ISRs.
- *
- * @param[in] tp the thread to be signaled
- * @param[in] mask the event flags set to be ORed
- *
- * @iclass
- */
-void chEvtSignalI(Thread *tp, eventmask_t mask) {
-
- chDbgCheckClassI();
- chDbgCheck(tp != NULL, "chEvtSignalI");
-
- tp->p_epending |= mask;
- /* Test on the AND/OR conditions wait states.*/
- if (((tp->p_state == THD_STATE_WTOREVT) &&
- ((tp->p_epending & tp->p_u.ewmask) != 0)) ||
- ((tp->p_state == THD_STATE_WTANDEVT) &&
- ((tp->p_epending & tp->p_u.ewmask) == tp->p_u.ewmask)))
- chSchReadyI(tp)->p_u.rdymsg = RDY_OK;
-}
-
-/**
- * @brief Signals all the Event Listeners registered on the specified Event
- * Source.
- * @details This function variants ORs the specified event flags to all the
- * threads registered on the @p EventSource in addition to the event
- * flags specified by the threads themselves in the
- * @p EventListener objects.
- *
- * @param[in] esp pointer to the @p EventSource structure
- * @param[in] flags the flags set to be added to the listener flags mask
- *
- * @api
- */
-void chEvtBroadcastFlags(EventSource *esp, flagsmask_t flags) {
-
- chSysLock();
- chEvtBroadcastFlagsI(esp, flags);
- chSchRescheduleS();
- chSysUnlock();
-}
-
-/**
- * @brief Returns the flags associated to an @p EventListener.
- * @details The flags are returned and the @p EventListener flags mask is
- * cleared.
- *
- * @param[in] elp pointer to the @p EventListener structure
- * @return The flags added to the listener by the associated
- * event source.
- *
- * @iclass
- */
-flagsmask_t chEvtGetAndClearFlagsI(EventListener *elp) {
- flagsmask_t flags;
-
- flags = elp->el_flags;
- elp->el_flags = 0;
-
- return flags;
-}
-
-/**
- * @brief Invokes the event handlers associated to an event flags mask.
- *
- * @param[in] mask mask of the event flags to be dispatched
- * @param[in] handlers an array of @p evhandler_t. The array must have size
- * equal to the number of bits in eventmask_t.
- *
- * @api
- */
-void chEvtDispatch(const evhandler_t *handlers, eventmask_t mask) {
- eventid_t eid;
-
- chDbgCheck(handlers != NULL, "chEvtDispatch");
-
- eid = 0;
- while (mask) {
- if (mask & EVENT_MASK(eid)) {
- chDbgAssert(handlers[eid] != NULL,
- "chEvtDispatch(), #1",
- "null handler");
- mask &= ~EVENT_MASK(eid);
- handlers[eid](eid);
- }
- eid++;
- }
-}
-
-#if CH_OPTIMIZE_SPEED || !CH_USE_EVENTS_TIMEOUT || defined(__DOXYGEN__)
-/**
- * @brief Waits for exactly one of the specified events.
- * @details The function waits for one event among those specified in
- * @p mask to become pending then the event is cleared and returned.
- * @note One and only one event is served in the function, the one with the
- * lowest event id. The function is meant to be invoked into a loop in
- * order to serve all the pending events.<br>
- * This means that Event Listeners with a lower event identifier have
- * an higher priority.
- *
- * @param[in] mask mask of the event flags that the function should wait
- * for, @p ALL_EVENTS enables all the events
- * @return The mask of the lowest id served and cleared event.
- *
- * @api
- */
-eventmask_t chEvtWaitOne(eventmask_t mask) {
- Thread *ctp = currp;
- eventmask_t m;
-
- chSysLock();
-
- if ((m = (ctp->p_epending & mask)) == 0) {
- ctp->p_u.ewmask = mask;
- chSchGoSleepS(THD_STATE_WTOREVT);
- m = ctp->p_epending & mask;
- }
- m &= -m;
- ctp->p_epending &= ~m;
-
- chSysUnlock();
- return m;
-}
-
-/**
- * @brief Waits for any of the specified events.
- * @details The function waits for any event among those specified in
- * @p mask to become pending then the events are cleared and returned.
- *
- * @param[in] mask mask of the event flags that the function should wait
- * for, @p ALL_EVENTS enables all the events
- * @return The mask of the served and cleared events.
- *
- * @api
- */
-eventmask_t chEvtWaitAny(eventmask_t mask) {
- Thread *ctp = currp;
- eventmask_t m;
-
- chSysLock();
-
- if ((m = (ctp->p_epending & mask)) == 0) {
- ctp->p_u.ewmask = mask;
- chSchGoSleepS(THD_STATE_WTOREVT);
- m = ctp->p_epending & mask;
- }
- ctp->p_epending &= ~m;
-
- chSysUnlock();
- return m;
-}
-
-/**
- * @brief Waits for all the specified events.
- * @details The function waits for all the events specified in @p mask to
- * become pending then the events are cleared and returned.
- *
- * @param[in] mask mask of the event flags that the function should wait
- * for, @p ALL_EVENTS requires all the events
- * @return The mask of the served and cleared events.
- *
- * @api
- */
-eventmask_t chEvtWaitAll(eventmask_t mask) {
- Thread *ctp = currp;
-
- chSysLock();
-
- if ((ctp->p_epending & mask) != mask) {
- ctp->p_u.ewmask = mask;
- chSchGoSleepS(THD_STATE_WTANDEVT);
- }
- ctp->p_epending &= ~mask;
-
- chSysUnlock();
- return mask;
-}
-#endif /* CH_OPTIMIZE_SPEED || !CH_USE_EVENTS_TIMEOUT */
-
-#if CH_USE_EVENTS_TIMEOUT || defined(__DOXYGEN__)
-/**
- * @brief Waits for exactly one of the specified events.
- * @details The function waits for one event among those specified in
- * @p mask to become pending then the event is cleared and returned.
- * @note One and only one event is served in the function, the one with the
- * lowest event id. The function is meant to be invoked into a loop in
- * order to serve all the pending events.<br>
- * This means that Event Listeners with a lower event identifier have
- * an higher priority.
- *
- * @param[in] mask mask of the event flags that the function should wait
- * for, @p ALL_EVENTS enables all the events
- * @param[in] time the number of ticks before the operation timeouts,
- * the following special values are allowed:
- * - @a TIME_IMMEDIATE immediate timeout.
- * - @a TIME_INFINITE no timeout.
- * .
- * @return The mask of the lowest id served and cleared event.
- * @retval 0 if the operation has timed out.
- *
- * @api
- */
-eventmask_t chEvtWaitOneTimeout(eventmask_t mask, systime_t time) {
- Thread *ctp = currp;
- eventmask_t m;
-
- chSysLock();
-
- if ((m = (ctp->p_epending & mask)) == 0) {
- if (TIME_IMMEDIATE == time) {
- chSysUnlock();
- return (eventmask_t)0;
- }
- ctp->p_u.ewmask = mask;
- if (chSchGoSleepTimeoutS(THD_STATE_WTOREVT, time) < RDY_OK) {
- chSysUnlock();
- return (eventmask_t)0;
- }
- m = ctp->p_epending & mask;
- }
- m &= -m;
- ctp->p_epending &= ~m;
-
- chSysUnlock();
- return m;
-}
-
-/**
- * @brief Waits for any of the specified events.
- * @details The function waits for any event among those specified in
- * @p mask to become pending then the events are cleared and
- * returned.
- *
- * @param[in] mask mask of the event flags that the function should wait
- * for, @p ALL_EVENTS enables all the events
- * @param[in] time the number of ticks before the operation timeouts,
- * the following special values are allowed:
- * - @a TIME_IMMEDIATE immediate timeout.
- * - @a TIME_INFINITE no timeout.
- * .
- * @return The mask of the served and cleared events.
- * @retval 0 if the operation has timed out.
- *
- * @api
- */
-eventmask_t chEvtWaitAnyTimeout(eventmask_t mask, systime_t time) {
- Thread *ctp = currp;
- eventmask_t m;
-
- chSysLock();
-
- if ((m = (ctp->p_epending & mask)) == 0) {
- if (TIME_IMMEDIATE == time) {
- chSysUnlock();
- return (eventmask_t)0;
- }
- ctp->p_u.ewmask = mask;
- if (chSchGoSleepTimeoutS(THD_STATE_WTOREVT, time) < RDY_OK) {
- chSysUnlock();
- return (eventmask_t)0;
- }
- m = ctp->p_epending & mask;
- }
- ctp->p_epending &= ~m;
-
- chSysUnlock();
- return m;
-}
-
-/**
- * @brief Waits for all the specified events.
- * @details The function waits for all the events specified in @p mask to
- * become pending then the events are cleared and returned.
- *
- * @param[in] mask mask of the event flags that the function should wait
- * for, @p ALL_EVENTS requires all the events
- * @param[in] time the number of ticks before the operation timeouts,
- * the following special values are allowed:
- * - @a TIME_IMMEDIATE immediate timeout.
- * - @a TIME_INFINITE no timeout.
- * .
- * @return The mask of the served and cleared events.
- * @retval 0 if the operation has timed out.
- *
- * @api
- */
-eventmask_t chEvtWaitAllTimeout(eventmask_t mask, systime_t time) {
- Thread *ctp = currp;
-
- chSysLock();
-
- if ((ctp->p_epending & mask) != mask) {
- if (TIME_IMMEDIATE == time) {
- chSysUnlock();
- return (eventmask_t)0;
- }
- ctp->p_u.ewmask = mask;
- if (chSchGoSleepTimeoutS(THD_STATE_WTANDEVT, time) < RDY_OK) {
- chSysUnlock();
- return (eventmask_t)0;
- }
- }
- ctp->p_epending &= ~mask;
-
- chSysUnlock();
- return mask;
-}
-#endif /* CH_USE_EVENTS_TIMEOUT */
-
-#endif /* CH_USE_EVENTS */
-
-/** @} */
diff --git a/os/kernel/src/chheap.c b/os/kernel/src/chheap.c deleted file mode 100644 index 23bcff6b4..000000000 --- a/os/kernel/src/chheap.c +++ /dev/null @@ -1,318 +0,0 @@ -/*
- ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
- 2011,2012,2013 Giovanni Di Sirio.
-
- This file is part of ChibiOS/RT.
-
- ChibiOS/RT is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- ChibiOS/RT is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-/**
- * @file chheap.c
- * @brief Heaps code.
- *
- * @addtogroup heaps
- * @details Heap Allocator related APIs.
- * <h2>Operation mode</h2>
- * The heap allocator implements a first-fit strategy and its APIs
- * are functionally equivalent to the usual @p malloc() and @p free()
- * library functions. The main difference is that the OS heap APIs
- * are guaranteed to be thread safe.<br>
- * By enabling the @p CH_USE_MALLOC_HEAP option the heap manager
- * will use the runtime-provided @p malloc() and @p free() as
- * back end for the heap APIs instead of the system provided
- * allocator.
- * @pre In order to use the heap APIs the @p CH_USE_HEAP option must
- * be enabled in @p chconf.h.
- * @{
- */
-
-#include "ch.h"
-
-#if CH_USE_HEAP || defined(__DOXYGEN__)
-
-#if !CH_USE_MALLOC_HEAP || defined(__DOXYGEN__)
-
-/*
- * Defaults on the best synchronization mechanism available.
- */
-#if CH_USE_MUTEXES || defined(__DOXYGEN__)
-#define H_LOCK(h) chMtxLock(&(h)->h_mtx)
-#define H_UNLOCK(h) chMtxUnlock()
-#else
-#define H_LOCK(h) chSemWait(&(h)->h_sem)
-#define H_UNLOCK(h) chSemSignal(&(h)->h_sem)
-#endif
-
-/**
- * @brief Default heap descriptor.
- */
-static MemoryHeap default_heap;
-
-/**
- * @brief Initializes the default heap.
- *
- * @notapi
- */
-void _heap_init(void) {
- default_heap.h_provider = chCoreAlloc;
- default_heap.h_free.h.u.next = (union heap_header *)NULL;
- default_heap.h_free.h.size = 0;
-#if CH_USE_MUTEXES || defined(__DOXYGEN__)
- chMtxInit(&default_heap.h_mtx);
-#else
- chSemInit(&default_heap.h_sem, 1);
-#endif
-}
-
-/**
- * @brief Initializes a memory heap from a static memory area.
- * @pre Both the heap buffer base and the heap size must be aligned to
- * the @p stkalign_t type size.
- * @pre In order to use this function the option @p CH_USE_MALLOC_HEAP
- * must be disabled.
- *
- * @param[out] heapp pointer to the memory heap descriptor to be initialized
- * @param[in] buf heap buffer base
- * @param[in] size heap size
- *
- * @init
- */
-void chHeapInit(MemoryHeap *heapp, void *buf, size_t size) {
- union heap_header *hp;
-
- chDbgCheck(MEM_IS_ALIGNED(buf) && MEM_IS_ALIGNED(size), "chHeapInit");
-
- heapp->h_provider = (memgetfunc_t)NULL;
- heapp->h_free.h.u.next = hp = buf;
- heapp->h_free.h.size = 0;
- hp->h.u.next = NULL;
- hp->h.size = size - sizeof(union heap_header);
-#if CH_USE_MUTEXES || defined(__DOXYGEN__)
- chMtxInit(&heapp->h_mtx);
-#else
- chSemInit(&heapp->h_sem, 1);
-#endif
-}
-
-/**
- * @brief Allocates a block of memory from the heap by using the first-fit
- * algorithm.
- * @details The allocated block is guaranteed to be properly aligned for a
- * pointer data type (@p stkalign_t).
- *
- * @param[in] heapp pointer to a heap descriptor or @p NULL in order to
- * access the default heap.
- * @param[in] size the size of the block to be allocated. Note that the
- * allocated block may be a bit bigger than the requested
- * size for alignment and fragmentation reasons.
- * @return A pointer to the allocated block.
- * @retval NULL if the block cannot be allocated.
- *
- * @api
- */
-void *chHeapAlloc(MemoryHeap *heapp, size_t size) {
- union heap_header *qp, *hp, *fp;
-
- if (heapp == NULL)
- heapp = &default_heap;
-
- size = MEM_ALIGN_NEXT(size);
- qp = &heapp->h_free;
- H_LOCK(heapp);
-
- while (qp->h.u.next != NULL) {
- hp = qp->h.u.next;
- if (hp->h.size >= size) {
- if (hp->h.size < size + sizeof(union heap_header)) {
- /* Gets the whole block even if it is slightly bigger than the
- requested size because the fragment would be too small to be
- useful.*/
- qp->h.u.next = hp->h.u.next;
- }
- else {
- /* Block bigger enough, must split it.*/
- fp = (void *)((uint8_t *)(hp) + sizeof(union heap_header) + size);
- fp->h.u.next = hp->h.u.next;
- fp->h.size = hp->h.size - sizeof(union heap_header) - size;
- qp->h.u.next = fp;
- hp->h.size = size;
- }
- hp->h.u.heap = heapp;
-
- H_UNLOCK(heapp);
- return (void *)(hp + 1);
- }
- qp = hp;
- }
-
- H_UNLOCK(heapp);
-
- /* More memory is required, tries to get it from the associated provider
- else fails.*/
- if (heapp->h_provider) {
- hp = heapp->h_provider(size + sizeof(union heap_header));
- if (hp != NULL) {
- hp->h.u.heap = heapp;
- hp->h.size = size;
- hp++;
- return (void *)hp;
- }
- }
- return NULL;
-}
-
-#define LIMIT(p) (union heap_header *)((uint8_t *)(p) + \
- sizeof(union heap_header) + \
- (p)->h.size)
-
-/**
- * @brief Frees a previously allocated memory block.
- *
- * @param[in] p pointer to the memory block to be freed
- *
- * @api
- */
-void chHeapFree(void *p) {
- union heap_header *qp, *hp;
- MemoryHeap *heapp;
-
- chDbgCheck(p != NULL, "chHeapFree");
-
- hp = (union heap_header *)p - 1;
- heapp = hp->h.u.heap;
- qp = &heapp->h_free;
- H_LOCK(heapp);
-
- while (TRUE) {
- chDbgAssert((hp < qp) || (hp >= LIMIT(qp)),
- "chHeapFree(), #1",
- "within free block");
-
- if (((qp == &heapp->h_free) || (hp > qp)) &&
- ((qp->h.u.next == NULL) || (hp < qp->h.u.next))) {
- /* Insertion after qp.*/
- hp->h.u.next = qp->h.u.next;
- qp->h.u.next = hp;
- /* Verifies if the newly inserted block should be merged.*/
- if (LIMIT(hp) == hp->h.u.next) {
- /* Merge with the next block.*/
- hp->h.size += hp->h.u.next->h.size + sizeof(union heap_header);
- hp->h.u.next = hp->h.u.next->h.u.next;
- }
- if ((LIMIT(qp) == hp)) {
- /* Merge with the previous block.*/
- qp->h.size += hp->h.size + sizeof(union heap_header);
- qp->h.u.next = hp->h.u.next;
- }
- break;
- }
- qp = qp->h.u.next;
- }
-
- H_UNLOCK(heapp);
- return;
-}
-
-/**
- * @brief Reports the heap status.
- * @note This function is meant to be used in the test suite, it should
- * not be really useful for the application code.
- * @note This function is not implemented when the @p CH_USE_MALLOC_HEAP
- * configuration option is used (it always returns zero).
- *
- * @param[in] heapp pointer to a heap descriptor or @p NULL in order to
- * access the default heap.
- * @param[in] sizep pointer to a variable that will receive the total
- * fragmented free space
- * @return The number of fragments in the heap.
- *
- * @api
- */
-size_t chHeapStatus(MemoryHeap *heapp, size_t *sizep) {
- union heap_header *qp;
- size_t n, sz;
-
- if (heapp == NULL)
- heapp = &default_heap;
-
- H_LOCK(heapp);
-
- sz = 0;
- for (n = 0, qp = &heapp->h_free; qp->h.u.next; n++, qp = qp->h.u.next)
- sz += qp->h.u.next->h.size;
- if (sizep)
- *sizep = sz;
-
- H_UNLOCK(heapp);
- return n;
-}
-
-#else /* CH_USE_MALLOC_HEAP */
-
-#include <stdlib.h>
-
-#if CH_USE_MUTEXES
-#define H_LOCK() chMtxLock(&hmtx)
-#define H_UNLOCK() chMtxUnlock()
-static Mutex hmtx;
-#elif CH_USE_SEMAPHORES
-#define H_LOCK() chSemWait(&hsem)
-#define H_UNLOCK() chSemSignal(&hsem)
-static Semaphore hsem;
-#endif
-
-void _heap_init(void) {
-
-#if CH_USE_MUTEXES
- chMtxInit(&hmtx);
-#else
- chSemInit(&hsem, 1);
-#endif
-}
-
-void *chHeapAlloc(MemoryHeap *heapp, size_t size) {
- void *p;
-
- chDbgCheck(heapp == NULL, "chHeapAlloc");
-
- H_LOCK();
- p = malloc(size);
- H_UNLOCK();
- return p;
-}
-
-void chHeapFree(void *p) {
-
- chDbgCheck(p != NULL, "chHeapFree");
-
- H_LOCK();
- free(p);
- H_UNLOCK();
-}
-
-size_t chHeapStatus(MemoryHeap *heapp, size_t *sizep) {
-
- chDbgCheck(heapp == NULL, "chHeapStatus");
-
- if (sizep)
- *sizep = 0;
- return 0;
-}
-
-#endif /* CH_USE_MALLOC_HEAP */
-
-#endif /* CH_USE_HEAP */
-
-/** @} */
diff --git a/os/kernel/src/chlists.c b/os/kernel/src/chlists.c deleted file mode 100644 index 8ee309200..000000000 --- a/os/kernel/src/chlists.c +++ /dev/null @@ -1,156 +0,0 @@ -/*
- ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
- 2011,2012,2013 Giovanni Di Sirio.
-
- This file is part of ChibiOS/RT.
-
- ChibiOS/RT is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- ChibiOS/RT is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-/**
- * @file chlists.c
- * @brief Thread queues/lists code.
- *
- * @addtogroup internals
- * @details All the functions present in this module, while public, are not
- * OS APIs and should not be directly used in the user applications
- * code.
- * @{
- */
-#include "ch.h"
-
-#if !CH_OPTIMIZE_SPEED || defined(__DOXYGEN__)
-/**
- * @brief Inserts a thread into a priority ordered queue.
- * @note The insertion is done by scanning the list from the highest
- * priority toward the lowest.
- *
- * @param[in] tp the pointer to the thread to be inserted in the list
- * @param[in] tqp the pointer to the threads list header
- *
- * @notapi
- */
-void prio_insert(Thread *tp, ThreadsQueue *tqp) {
-
- /* cp iterates over the queue.*/
- Thread *cp = (Thread *)tqp;
- do {
- /* Iterate to next thread in queue.*/
- cp = cp->p_next;
- /* Not end of queue? and cp has equal or higher priority than tp?.*/
- } while ((cp != (Thread *)tqp) && (cp->p_prio >= tp->p_prio));
- /* Insertion on p_prev.*/
- tp->p_next = cp;
- tp->p_prev = cp->p_prev;
- tp->p_prev->p_next = cp->p_prev = tp;
-}
-
-/**
- * @brief Inserts a Thread into a queue.
- *
- * @param[in] tp the pointer to the thread to be inserted in the list
- * @param[in] tqp the pointer to the threads list header
- *
- * @notapi
- */
-void queue_insert(Thread *tp, ThreadsQueue *tqp) {
-
- tp->p_next = (Thread *)tqp;
- tp->p_prev = tqp->p_prev;
- tp->p_prev->p_next = tqp->p_prev = tp;
-}
-
-/**
- * @brief Removes the first-out Thread from a queue and returns it.
- * @note If the queue is priority ordered then this function returns the
- * thread with the highest priority.
- *
- * @param[in] tqp the pointer to the threads list header
- * @return The removed thread pointer.
- *
- * @notapi
- */
-Thread *fifo_remove(ThreadsQueue *tqp) {
- Thread *tp = tqp->p_next;
-
- (tqp->p_next = tp->p_next)->p_prev = (Thread *)tqp;
- return tp;
-}
-
-/**
- * @brief Removes the last-out Thread from a queue and returns it.
- * @note If the queue is priority ordered then this function returns the
- * thread with the lowest priority.
- *
- * @param[in] tqp the pointer to the threads list header
- * @return The removed thread pointer.
- *
- * @notapi
- */
-Thread *lifo_remove(ThreadsQueue *tqp) {
- Thread *tp = tqp->p_prev;
-
- (tqp->p_prev = tp->p_prev)->p_next = (Thread *)tqp;
- return tp;
-}
-
-/**
- * @brief Removes a Thread from a queue and returns it.
- * @details The thread is removed from the queue regardless of its relative
- * position and regardless the used insertion method.
- *
- * @param[in] tp the pointer to the thread to be removed from the queue
- * @return The removed thread pointer.
- *
- * @notapi
- */
-Thread *dequeue(Thread *tp) {
-
- tp->p_prev->p_next = tp->p_next;
- tp->p_next->p_prev = tp->p_prev;
- return tp;
-}
-
-/**
- * @brief Pushes a Thread on top of a stack list.
- *
- * @param[in] tp the pointer to the thread to be inserted in the list
- * @param[in] tlp the pointer to the threads list header
- *
- * @notapi
- */
-void list_insert(Thread *tp, ThreadsList *tlp) {
-
- tp->p_next = tlp->p_next;
- tlp->p_next = tp;
-}
-
-/**
- * @brief Pops a Thread from the top of a stack list and returns it.
- * @pre The list must be non-empty before calling this function.
- *
- * @param[in] tlp the pointer to the threads list header
- * @return The removed thread pointer.
- *
- * @notapi
- */
-Thread *list_remove(ThreadsList *tlp) {
-
- Thread *tp = tlp->p_next;
- tlp->p_next = tp->p_next;
- return tp;
-}
-#endif /* CH_OPTIMIZE_SPEED */
-
-/** @} */
diff --git a/os/kernel/src/chmboxes.c b/os/kernel/src/chmboxes.c deleted file mode 100644 index 6f09a8d26..000000000 --- a/os/kernel/src/chmboxes.c +++ /dev/null @@ -1,376 +0,0 @@ -/*
- ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
- 2011,2012,2013 Giovanni Di Sirio.
-
- This file is part of ChibiOS/RT.
-
- ChibiOS/RT is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- ChibiOS/RT is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-/**
- * @file chmboxes.c
- * @brief Mailboxes code.
- *
- * @addtogroup mailboxes
- * @details Asynchronous messages.
- * <h2>Operation mode</h2>
- * A mailbox is an asynchronous communication mechanism.<br>
- * Operations defined for mailboxes:
- * - <b>Post</b>: Posts a message on the mailbox in FIFO order.
- * - <b>Post Ahead</b>: Posts a message on the mailbox with urgent
- * priority.
- * - <b>Fetch</b>: A message is fetched from the mailbox and removed
- * from the queue.
- * - <b>Reset</b>: The mailbox is emptied and all the stored messages
- * are lost.
- * .
- * A message is a variable of type msg_t that is guaranteed to have
- * the same size of and be compatible with (data) pointers (anyway an
- * explicit cast is needed).
- * If larger messages need to be exchanged then a pointer to a
- * structure can be posted in the mailbox but the posting side has
- * no predefined way to know when the message has been processed. A
- * possible approach is to allocate memory (from a memory pool for
- * example) from the posting side and free it on the fetching side.
- * Another approach is to set a "done" flag into the structure pointed
- * by the message.
- * @pre In order to use the mailboxes APIs the @p CH_USE_MAILBOXES option
- * must be enabled in @p chconf.h.
- * @{
- */
-
-#include "ch.h"
-
-#if CH_USE_MAILBOXES || defined(__DOXYGEN__)
-/**
- * @brief Initializes a Mailbox object.
- *
- * @param[out] mbp the pointer to the Mailbox structure to be initialized
- * @param[in] buf pointer to the messages buffer as an array of @p msg_t
- * @param[in] n number of elements in the buffer array
- *
- * @init
- */
-void chMBInit(Mailbox *mbp, msg_t *buf, cnt_t n) {
-
- chDbgCheck((mbp != NULL) && (buf != NULL) && (n > 0), "chMBInit");
-
- mbp->mb_buffer = mbp->mb_wrptr = mbp->mb_rdptr = buf;
- mbp->mb_top = &buf[n];
- chSemInit(&mbp->mb_emptysem, n);
- chSemInit(&mbp->mb_fullsem, 0);
-}
-
-/**
- * @brief Resets a Mailbox object.
- * @details All the waiting threads are resumed with status @p RDY_RESET and
- * the queued messages are lost.
- *
- * @param[in] mbp the pointer to an initialized Mailbox object
- *
- * @api
- */
-void chMBReset(Mailbox *mbp) {
-
- chDbgCheck(mbp != NULL, "chMBReset");
-
- chSysLock();
- mbp->mb_wrptr = mbp->mb_rdptr = mbp->mb_buffer;
- chSemResetI(&mbp->mb_emptysem, mbp->mb_top - mbp->mb_buffer);
- chSemResetI(&mbp->mb_fullsem, 0);
- chSchRescheduleS();
- chSysUnlock();
-}
-
-/**
- * @brief Posts a message into a mailbox.
- * @details The invoking thread waits until a empty slot in the mailbox becomes
- * available or the specified time runs out.
- *
- * @param[in] mbp the pointer to an initialized Mailbox object
- * @param[in] msg the message to be posted on the mailbox
- * @param[in] time the number of ticks before the operation timeouts,
- * the following special values are allowed:
- * - @a TIME_IMMEDIATE immediate timeout.
- * - @a TIME_INFINITE no timeout.
- * .
- * @return The operation status.
- * @retval RDY_OK if a message has been correctly posted.
- * @retval RDY_RESET if the mailbox has been reset while waiting.
- * @retval RDY_TIMEOUT if the operation has timed out.
- *
- * @api
- */
-msg_t chMBPost(Mailbox *mbp, msg_t msg, systime_t time) {
- msg_t rdymsg;
-
- chSysLock();
- rdymsg = chMBPostS(mbp, msg, time);
- chSysUnlock();
- return rdymsg;
-}
-
-/**
- * @brief Posts a message into a mailbox.
- * @details The invoking thread waits until a empty slot in the mailbox becomes
- * available or the specified time runs out.
- *
- * @param[in] mbp the pointer to an initialized Mailbox object
- * @param[in] msg the message to be posted on the mailbox
- * @param[in] time the number of ticks before the operation timeouts,
- * the following special values are allowed:
- * - @a TIME_IMMEDIATE immediate timeout.
- * - @a TIME_INFINITE no timeout.
- * .
- * @return The operation status.
- * @retval RDY_OK if a message has been correctly posted.
- * @retval RDY_RESET if the mailbox has been reset while waiting.
- * @retval RDY_TIMEOUT if the operation has timed out.
- *
- * @sclass
- */
-msg_t chMBPostS(Mailbox *mbp, msg_t msg, systime_t time) {
- msg_t rdymsg;
-
- chDbgCheckClassS();
- chDbgCheck(mbp != NULL, "chMBPostS");
-
- rdymsg = chSemWaitTimeoutS(&mbp->mb_emptysem, time);
- if (rdymsg == RDY_OK) {
- *mbp->mb_wrptr++ = msg;
- if (mbp->mb_wrptr >= mbp->mb_top)
- mbp->mb_wrptr = mbp->mb_buffer;
- chSemSignalI(&mbp->mb_fullsem);
- chSchRescheduleS();
- }
- return rdymsg;
-}
-
-/**
- * @brief Posts a message into a mailbox.
- * @details This variant is non-blocking, the function returns a timeout
- * condition if the queue is full.
- *
- * @param[in] mbp the pointer to an initialized Mailbox object
- * @param[in] msg the message to be posted on the mailbox
- * @return The operation status.
- * @retval RDY_OK if a message has been correctly posted.
- * @retval RDY_TIMEOUT if the mailbox is full and the message cannot be
- * posted.
- *
- * @iclass
- */
-msg_t chMBPostI(Mailbox *mbp, msg_t msg) {
-
- chDbgCheckClassI();
- chDbgCheck(mbp != NULL, "chMBPostI");
-
- if (chSemGetCounterI(&mbp->mb_emptysem) <= 0)
- return RDY_TIMEOUT;
- chSemFastWaitI(&mbp->mb_emptysem);
- *mbp->mb_wrptr++ = msg;
- if (mbp->mb_wrptr >= mbp->mb_top)
- mbp->mb_wrptr = mbp->mb_buffer;
- chSemSignalI(&mbp->mb_fullsem);
- return RDY_OK;
-}
-
-/**
- * @brief Posts an high priority message into a mailbox.
- * @details The invoking thread waits until a empty slot in the mailbox becomes
- * available or the specified time runs out.
- *
- * @param[in] mbp the pointer to an initialized Mailbox object
- * @param[in] msg the message to be posted on the mailbox
- * @param[in] time the number of ticks before the operation timeouts,
- * the following special values are allowed:
- * - @a TIME_IMMEDIATE immediate timeout.
- * - @a TIME_INFINITE no timeout.
- * .
- * @return The operation status.
- * @retval RDY_OK if a message has been correctly posted.
- * @retval RDY_RESET if the mailbox has been reset while waiting.
- * @retval RDY_TIMEOUT if the operation has timed out.
- *
- * @api
- */
-msg_t chMBPostAhead(Mailbox *mbp, msg_t msg, systime_t time) {
- msg_t rdymsg;
-
- chSysLock();
- rdymsg = chMBPostAheadS(mbp, msg, time);
- chSysUnlock();
- return rdymsg;
-}
-
-/**
- * @brief Posts an high priority message into a mailbox.
- * @details The invoking thread waits until a empty slot in the mailbox becomes
- * available or the specified time runs out.
- *
- * @param[in] mbp the pointer to an initialized Mailbox object
- * @param[in] msg the message to be posted on the mailbox
- * @param[in] time the number of ticks before the operation timeouts,
- * the following special values are allowed:
- * - @a TIME_IMMEDIATE immediate timeout.
- * - @a TIME_INFINITE no timeout.
- * .
- * @return The operation status.
- * @retval RDY_OK if a message has been correctly posted.
- * @retval RDY_RESET if the mailbox has been reset while waiting.
- * @retval RDY_TIMEOUT if the operation has timed out.
- *
- * @sclass
- */
-msg_t chMBPostAheadS(Mailbox *mbp, msg_t msg, systime_t time) {
- msg_t rdymsg;
-
- chDbgCheckClassS();
- chDbgCheck(mbp != NULL, "chMBPostAheadS");
-
- rdymsg = chSemWaitTimeoutS(&mbp->mb_emptysem, time);
- if (rdymsg == RDY_OK) {
- if (--mbp->mb_rdptr < mbp->mb_buffer)
- mbp->mb_rdptr = mbp->mb_top - 1;
- *mbp->mb_rdptr = msg;
- chSemSignalI(&mbp->mb_fullsem);
- chSchRescheduleS();
- }
- return rdymsg;
-}
-
-/**
- * @brief Posts an high priority message into a mailbox.
- * @details This variant is non-blocking, the function returns a timeout
- * condition if the queue is full.
- *
- * @param[in] mbp the pointer to an initialized Mailbox object
- * @param[in] msg the message to be posted on the mailbox
- * @return The operation status.
- * @retval RDY_OK if a message has been correctly posted.
- * @retval RDY_TIMEOUT if the mailbox is full and the message cannot be
- * posted.
- *
- * @iclass
- */
-msg_t chMBPostAheadI(Mailbox *mbp, msg_t msg) {
-
- chDbgCheckClassI();
- chDbgCheck(mbp != NULL, "chMBPostAheadI");
-
- if (chSemGetCounterI(&mbp->mb_emptysem) <= 0)
- return RDY_TIMEOUT;
- chSemFastWaitI(&mbp->mb_emptysem);
- if (--mbp->mb_rdptr < mbp->mb_buffer)
- mbp->mb_rdptr = mbp->mb_top - 1;
- *mbp->mb_rdptr = msg;
- chSemSignalI(&mbp->mb_fullsem);
- return RDY_OK;
-}
-
-/**
- * @brief Retrieves a message from a mailbox.
- * @details The invoking thread waits until a message is posted in the mailbox
- * or the specified time runs out.
- *
- * @param[in] mbp the pointer to an initialized Mailbox object
- * @param[out] msgp pointer to a message variable for the received message
- * @param[in] time the number of ticks before the operation timeouts,
- * the following special values are allowed:
- * - @a TIME_IMMEDIATE immediate timeout.
- * - @a TIME_INFINITE no timeout.
- * .
- * @return The operation status.
- * @retval RDY_OK if a message has been correctly fetched.
- * @retval RDY_RESET if the mailbox has been reset while waiting.
- * @retval RDY_TIMEOUT if the operation has timed out.
- *
- * @api
- */
-msg_t chMBFetch(Mailbox *mbp, msg_t *msgp, systime_t time) {
- msg_t rdymsg;
-
- chSysLock();
- rdymsg = chMBFetchS(mbp, msgp, time);
- chSysUnlock();
- return rdymsg;
-}
-
-/**
- * @brief Retrieves a message from a mailbox.
- * @details The invoking thread waits until a message is posted in the mailbox
- * or the specified time runs out.
- *
- * @param[in] mbp the pointer to an initialized Mailbox object
- * @param[out] msgp pointer to a message variable for the received message
- * @param[in] time the number of ticks before the operation timeouts,
- * the following special values are allowed:
- * - @a TIME_IMMEDIATE immediate timeout.
- * - @a TIME_INFINITE no timeout.
- * .
- * @return The operation status.
- * @retval RDY_OK if a message has been correctly fetched.
- * @retval RDY_RESET if the mailbox has been reset while waiting.
- * @retval RDY_TIMEOUT if the operation has timed out.
- *
- * @sclass
- */
-msg_t chMBFetchS(Mailbox *mbp, msg_t *msgp, systime_t time) {
- msg_t rdymsg;
-
- chDbgCheckClassS();
- chDbgCheck((mbp != NULL) && (msgp != NULL), "chMBFetchS");
-
- rdymsg = chSemWaitTimeoutS(&mbp->mb_fullsem, time);
- if (rdymsg == RDY_OK) {
- *msgp = *mbp->mb_rdptr++;
- if (mbp->mb_rdptr >= mbp->mb_top)
- mbp->mb_rdptr = mbp->mb_buffer;
- chSemSignalI(&mbp->mb_emptysem);
- chSchRescheduleS();
- }
- return rdymsg;
-}
-
-/**
- * @brief Retrieves a message from a mailbox.
- * @details This variant is non-blocking, the function returns a timeout
- * condition if the queue is empty.
- *
- * @param[in] mbp the pointer to an initialized Mailbox object
- * @param[out] msgp pointer to a message variable for the received message
- * @return The operation status.
- * @retval RDY_OK if a message has been correctly fetched.
- * @retval RDY_TIMEOUT if the mailbox is empty and a message cannot be
- * fetched.
- *
- * @iclass
- */
-msg_t chMBFetchI(Mailbox *mbp, msg_t *msgp) {
-
- chDbgCheckClassI();
- chDbgCheck((mbp != NULL) && (msgp != NULL), "chMBFetchI");
-
- if (chSemGetCounterI(&mbp->mb_fullsem) <= 0)
- return RDY_TIMEOUT;
- chSemFastWaitI(&mbp->mb_fullsem);
- *msgp = *mbp->mb_rdptr++;
- if (mbp->mb_rdptr >= mbp->mb_top)
- mbp->mb_rdptr = mbp->mb_buffer;
- chSemSignalI(&mbp->mb_emptysem);
- return RDY_OK;
-}
-#endif /* CH_USE_MAILBOXES */
-
-/** @} */
diff --git a/os/kernel/src/chmemcore.c b/os/kernel/src/chmemcore.c deleted file mode 100644 index 0ff26bc76..000000000 --- a/os/kernel/src/chmemcore.c +++ /dev/null @@ -1,131 +0,0 @@ -/*
- ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
- 2011,2012,2013 Giovanni Di Sirio.
-
- This file is part of ChibiOS/RT.
-
- ChibiOS/RT is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- ChibiOS/RT is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-/**
- * @file chmemcore.c
- * @brief Core memory manager code.
- *
- * @addtogroup memcore
- * @details Core Memory Manager related APIs and services.
- * <h2>Operation mode</h2>
- * The core memory manager is a simplified allocator that only
- * allows to allocate memory blocks without the possibility to
- * free them.<br>
- * This allocator is meant as a memory blocks provider for the
- * other allocators such as:
- * - C-Runtime allocator (through a compiler specific adapter module).
- * - Heap allocator (see @ref heaps).
- * - Memory pools allocator (see @ref pools).
- * .
- * By having a centralized memory provider the various allocators
- * can coexist and share the main memory.<br>
- * This allocator, alone, is also useful for very simple
- * applications that just require a simple way to get memory
- * blocks.
- * @pre In order to use the core memory manager APIs the @p CH_USE_MEMCORE
- * option must be enabled in @p chconf.h.
- * @{
- */
-
-#include "ch.h"
-
-#if CH_USE_MEMCORE || defined(__DOXYGEN__)
-
-static uint8_t *nextmem;
-static uint8_t *endmem;
-
-/**
- * @brief Low level memory manager initialization.
- *
- * @notapi
- */
-void _core_init(void) {
-#if CH_MEMCORE_SIZE == 0
- extern uint8_t __heap_base__[];
- extern uint8_t __heap_end__[];
- nextmem = (uint8_t *)MEM_ALIGN_NEXT(__heap_base__);
- endmem = (uint8_t *)MEM_ALIGN_PREV(__heap_end__);
-#else
- static stkalign_t buffer[MEM_ALIGN_NEXT(CH_MEMCORE_SIZE)/MEM_ALIGN_SIZE];
- nextmem = (uint8_t *)&buffer[0];
- endmem = (uint8_t *)&buffer[MEM_ALIGN_NEXT(CH_MEMCORE_SIZE)/MEM_ALIGN_SIZE];
-#endif
-}
-
-/**
- * @brief Allocates a memory block.
- * @details The size of the returned block is aligned to the alignment
- * type so it is not possible to allocate less
- * than <code>MEM_ALIGN_SIZE</code>.
- *
- * @param[in] size the size of the block to be allocated
- * @return A pointer to the allocated memory block.
- * @retval NULL allocation failed, core memory exhausted.
- *
- * @api
- */
-void *chCoreAlloc(size_t size) {
- void *p;
-
- chSysLock();
- p = chCoreAllocI(size);
- chSysUnlock();
- return p;
-}
-
-/**
- * @brief Allocates a memory block.
- * @details The size of the returned block is aligned to the alignment
- * type so it is not possible to allocate less than
- * <code>MEM_ALIGN_SIZE</code>.
- *
- * @param[in] size the size of the block to be allocated.
- * @return A pointer to the allocated memory block.
- * @retval NULL allocation failed, core memory exhausted.
- *
- * @iclass
- */
-void *chCoreAllocI(size_t size) {
- void *p;
-
- chDbgCheckClassI();
-
- size = MEM_ALIGN_NEXT(size);
- if ((size_t)(endmem - nextmem) < size)
- return NULL;
- p = nextmem;
- nextmem += size;
- return p;
-}
-
-/**
- * @brief Core memory status.
- *
- * @return The size, in bytes, of the free core memory.
- *
- * @api
- */
-size_t chCoreStatus(void) {
-
- return (size_t)(endmem - nextmem);
-}
-#endif /* CH_USE_MEMCORE */
-
-/** @} */
diff --git a/os/kernel/src/chmempools.c b/os/kernel/src/chmempools.c deleted file mode 100644 index 44faa057a..000000000 --- a/os/kernel/src/chmempools.c +++ /dev/null @@ -1,173 +0,0 @@ -/*
- ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
- 2011,2012,2013 Giovanni Di Sirio.
-
- This file is part of ChibiOS/RT.
-
- ChibiOS/RT is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- ChibiOS/RT is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-/**
- * @file chmempools.c
- * @brief Memory Pools code.
- *
- * @addtogroup pools
- * @details Memory Pools related APIs and services.
- * <h2>Operation mode</h2>
- * The Memory Pools APIs allow to allocate/free fixed size objects in
- * <b>constant time</b> and reliably without memory fragmentation
- * problems.<br>
- * Memory Pools do not enforce any alignment constraint on the
- * contained object however the objects must be properly aligned
- * to contain a pointer to void.
- * @pre In order to use the memory pools APIs the @p CH_USE_MEMPOOLS option
- * must be enabled in @p chconf.h.
- * @{
- */
-
-#include "ch.h"
-
-#if CH_USE_MEMPOOLS || defined(__DOXYGEN__)
-/**
- * @brief Initializes an empty memory pool.
- *
- * @param[out] mp pointer to a @p MemoryPool structure
- * @param[in] size the size of the objects contained in this memory pool,
- * the minimum accepted size is the size of a pointer to
- * void.
- * @param[in] provider memory provider function for the memory pool or
- * @p NULL if the pool is not allowed to grow
- * automatically
- *
- * @init
- */
-void chPoolInit(MemoryPool *mp, size_t size, memgetfunc_t provider) {
-
- chDbgCheck((mp != NULL) && (size >= sizeof(void *)), "chPoolInit");
-
- mp->mp_next = NULL;
- mp->mp_object_size = size;
- mp->mp_provider = provider;
-}
-
-/**
- * @brief Loads a memory pool with an array of static objects.
- * @pre The memory pool must be already been initialized.
- * @pre The array elements must be of the right size for the specified
- * memory pool.
- * @post The memory pool contains the elements of the input array.
- *
- * @param[in] mp pointer to a @p MemoryPool structure
- * @param[in] p pointer to the array first element
- * @param[in] n number of elements in the array
- *
- * @api
- */
-void chPoolLoadArray(MemoryPool *mp, void *p, size_t n) {
-
- chDbgCheck((mp != NULL) && (n != 0), "chPoolLoadArray");
-
- while (n) {
- chPoolAdd(mp, p);
- p = (void *)(((uint8_t *)p) + mp->mp_object_size);
- n--;
- }
-}
-
-/**
- * @brief Allocates an object from a memory pool.
- * @pre The memory pool must be already been initialized.
- *
- * @param[in] mp pointer to a @p MemoryPool structure
- * @return The pointer to the allocated object.
- * @retval NULL if pool is empty.
- *
- * @iclass
- */
-void *chPoolAllocI(MemoryPool *mp) {
- void *objp;
-
- chDbgCheckClassI();
- chDbgCheck(mp != NULL, "chPoolAllocI");
-
- if ((objp = mp->mp_next) != NULL)
- mp->mp_next = mp->mp_next->ph_next;
- else if (mp->mp_provider != NULL)
- objp = mp->mp_provider(mp->mp_object_size);
- return objp;
-}
-
-/**
- * @brief Allocates an object from a memory pool.
- * @pre The memory pool must be already been initialized.
- *
- * @param[in] mp pointer to a @p MemoryPool structure
- * @return The pointer to the allocated object.
- * @retval NULL if pool is empty.
- *
- * @api
- */
-void *chPoolAlloc(MemoryPool *mp) {
- void *objp;
-
- chSysLock();
- objp = chPoolAllocI(mp);
- chSysUnlock();
- return objp;
-}
-
-/**
- * @brief Releases an object into a memory pool.
- * @pre The memory pool must be already been initialized.
- * @pre The freed object must be of the right size for the specified
- * memory pool.
- * @pre The object must be properly aligned to contain a pointer to void.
- *
- * @param[in] mp pointer to a @p MemoryPool structure
- * @param[in] objp the pointer to the object to be released
- *
- * @iclass
- */
-void chPoolFreeI(MemoryPool *mp, void *objp) {
- struct pool_header *php = objp;
-
- chDbgCheckClassI();
- chDbgCheck((mp != NULL) && (objp != NULL), "chPoolFreeI");
-
- php->ph_next = mp->mp_next;
- mp->mp_next = php;
-}
-
-/**
- * @brief Releases an object into a memory pool.
- * @pre The memory pool must be already been initialized.
- * @pre The freed object must be of the right size for the specified
- * memory pool.
- * @pre The object must be properly aligned to contain a pointer to void.
- *
- * @param[in] mp pointer to a @p MemoryPool structure
- * @param[in] objp the pointer to the object to be released
- *
- * @api
- */
-void chPoolFree(MemoryPool *mp, void *objp) {
-
- chSysLock();
- chPoolFreeI(mp, objp);
- chSysUnlock();
-}
-
-#endif /* CH_USE_MEMPOOLS */
-
-/** @} */
diff --git a/os/kernel/src/chmsg.c b/os/kernel/src/chmsg.c deleted file mode 100644 index ad97da79c..000000000 --- a/os/kernel/src/chmsg.c +++ /dev/null @@ -1,132 +0,0 @@ -/*
- ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
- 2011,2012,2013 Giovanni Di Sirio.
-
- This file is part of ChibiOS/RT.
-
- ChibiOS/RT is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- ChibiOS/RT is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-/**
- * @file chmsg.c
- * @brief Messages code.
- *
- * @addtogroup messages
- * @details Synchronous inter-thread messages APIs and services.
- * <h2>Operation Mode</h2>
- * Synchronous messages are an easy to use and fast IPC mechanism,
- * threads can both act as message servers and/or message clients,
- * the mechanism allows data to be carried in both directions. Note
- * that messages are not copied between the client and server threads
- * but just a pointer passed so the exchange is very time
- * efficient.<br>
- * Messages are scalar data types of type @p msg_t that are guaranteed
- * to be size compatible with data pointers. Note that on some
- * architectures function pointers can be larger that @p msg_t.<br>
- * Messages are usually processed in FIFO order but it is possible to
- * process them in priority order by enabling the
- * @p CH_USE_MESSAGES_PRIORITY option in @p chconf.h.<br>
- * @pre In order to use the message APIs the @p CH_USE_MESSAGES option
- * must be enabled in @p chconf.h.
- * @post Enabling messages requires 6-12 (depending on the architecture)
- * extra bytes in the @p Thread structure.
- * @{
- */
-
-#include "ch.h"
-
-#if CH_USE_MESSAGES || defined(__DOXYGEN__)
-
-#if CH_USE_MESSAGES_PRIORITY
-#define msg_insert(tp, qp) prio_insert(tp, qp)
-#else
-#define msg_insert(tp, qp) queue_insert(tp, qp)
-#endif
-
-/**
- * @brief Sends a message to the specified thread.
- * @details The sender is stopped until the receiver executes a
- * @p chMsgRelease()after receiving the message.
- *
- * @param[in] tp the pointer to the thread
- * @param[in] msg the message
- * @return The answer message from @p chMsgRelease().
- *
- * @api
- */
-msg_t chMsgSend(Thread *tp, msg_t msg) {
- Thread *ctp = currp;
-
- chDbgCheck(tp != NULL, "chMsgSend");
-
- chSysLock();
- ctp->p_msg = msg;
- ctp->p_u.wtobjp = &tp->p_msgqueue;
- msg_insert(ctp, &tp->p_msgqueue);
- if (tp->p_state == THD_STATE_WTMSG)
- chSchReadyI(tp);
- chSchGoSleepS(THD_STATE_SNDMSGQ);
- msg = ctp->p_u.rdymsg;
- chSysUnlock();
- return msg;
-}
-
-/**
- * @brief Suspends the thread and waits for an incoming message.
- * @post After receiving a message the function @p chMsgGet() must be
- * called in order to retrieve the message and then @p chMsgRelease()
- * must be invoked in order to acknowledge the reception and send
- * the answer.
- * @note If the message is a pointer then you can assume that the data
- * pointed by the message is stable until you invoke @p chMsgRelease()
- * because the sending thread is suspended until then.
- *
- * @return A reference to the thread carrying the message.
- *
- * @api
- */
-Thread *chMsgWait(void) {
- Thread *tp;
-
- chSysLock();
- if (!chMsgIsPendingI(currp))
- chSchGoSleepS(THD_STATE_WTMSG);
- tp = fifo_remove(&currp->p_msgqueue);
- tp->p_state = THD_STATE_SNDMSG;
- chSysUnlock();
- return tp;
-}
-
-/**
- * @brief Releases a sender thread specifying a response message.
- * @pre Invoke this function only after a message has been received
- * using @p chMsgWait().
- *
- * @param[in] tp pointer to the thread
- * @param[in] msg message to be returned to the sender
- *
- * @api
- */
-void chMsgRelease(Thread *tp, msg_t msg) {
-
- chSysLock();
- chDbgAssert(tp->p_state == THD_STATE_SNDMSG,
- "chMsgRelease(), #1", "invalid state");
- chMsgReleaseS(tp, msg);
- chSysUnlock();
-}
-
-#endif /* CH_USE_MESSAGES */
-
-/** @} */
diff --git a/os/kernel/src/chmtx.c b/os/kernel/src/chmtx.c deleted file mode 100644 index 84d7e53a6..000000000 --- a/os/kernel/src/chmtx.c +++ /dev/null @@ -1,393 +0,0 @@ -/*
- ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
- 2011,2012,2013 Giovanni Di Sirio.
-
- This file is part of ChibiOS/RT.
-
- ChibiOS/RT is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- ChibiOS/RT is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-/**
- * @file chmtx.c
- * @brief Mutexes code.
- *
- * @addtogroup mutexes
- * @details Mutexes related APIs and services.
- *
- * <h2>Operation mode</h2>
- * A mutex is a threads synchronization object that can be in two
- * distinct states:
- * - Not owned (unlocked).
- * - Owned by a thread (locked).
- * .
- * Operations defined for mutexes:
- * - <b>Lock</b>: The mutex is checked, if the mutex is not owned by
- * some other thread then it is associated to the locking thread
- * else the thread is queued on the mutex in a list ordered by
- * priority.
- * - <b>Unlock</b>: The mutex is released by the owner and the highest
- * priority thread waiting in the queue, if any, is resumed and made
- * owner of the mutex.
- * .
- * <h2>Constraints</h2>
- * In ChibiOS/RT the Unlock operations are always performed in
- * lock-reverse order. The unlock API does not even have a parameter,
- * the mutex to unlock is selected from an internal, per-thread, stack
- * of owned mutexes. This both improves the performance and is
- * required for an efficient implementation of the priority
- * inheritance mechanism.
- *
- * <h2>The priority inversion problem</h2>
- * The mutexes in ChibiOS/RT implements the <b>full</b> priority
- * inheritance mechanism in order handle the priority inversion
- * problem.<br>
- * When a thread is queued on a mutex, any thread, directly or
- * indirectly, holding the mutex gains the same priority of the
- * waiting thread (if their priority was not already equal or higher).
- * The mechanism works with any number of nested mutexes and any
- * number of involved threads. The algorithm complexity (worst case)
- * is N with N equal to the number of nested mutexes.
- * @pre In order to use the mutex APIs the @p CH_USE_MUTEXES option
- * must be enabled in @p chconf.h.
- * @post Enabling mutexes requires 5-12 (depending on the architecture)
- * extra bytes in the @p Thread structure.
- * @{
- */
-
-#include "ch.h"
-
-#if CH_USE_MUTEXES || defined(__DOXYGEN__)
-
-/**
- * @brief Initializes s @p Mutex structure.
- *
- * @param[out] mp pointer to a @p Mutex structure
- *
- * @init
- */
-void chMtxInit(Mutex *mp) {
-
- chDbgCheck(mp != NULL, "chMtxInit");
-
- queue_init(&mp->m_queue);
- mp->m_owner = NULL;
-}
-
-/**
- * @brief Locks the specified mutex.
- * @post The mutex is locked and inserted in the per-thread stack of owned
- * mutexes.
- *
- * @param[in] mp pointer to the @p Mutex structure
- *
- * @api
- */
-void chMtxLock(Mutex *mp) {
-
- chSysLock();
-
- chMtxLockS(mp);
-
- chSysUnlock();
-}
-
-/**
- * @brief Locks the specified mutex.
- * @post The mutex is locked and inserted in the per-thread stack of owned
- * mutexes.
- *
- * @param[in] mp pointer to the @p Mutex structure
- *
- * @sclass
- */
-void chMtxLockS(Mutex *mp) {
- Thread *ctp = currp;
-
- chDbgCheckClassS();
- chDbgCheck(mp != NULL, "chMtxLockS");
-
- /* Is the mutex already locked? */
- if (mp->m_owner != NULL) {
- /* Priority inheritance protocol; explores the thread-mutex dependencies
- boosting the priority of all the affected threads to equal the priority
- of the running thread requesting the mutex.*/
- Thread *tp = mp->m_owner;
- /* Does the running thread have higher priority than the mutex
- owning thread? */
- while (tp->p_prio < ctp->p_prio) {
- /* Make priority of thread tp match the running thread's priority.*/
- tp->p_prio = ctp->p_prio;
- /* The following states need priority queues reordering.*/
- switch (tp->p_state) {
- case THD_STATE_WTMTX:
- /* Re-enqueues the mutex owner with its new priority.*/
- prio_insert(dequeue(tp), (ThreadsQueue *)tp->p_u.wtobjp);
- tp = ((Mutex *)tp->p_u.wtobjp)->m_owner;
- continue;
-#if CH_USE_CONDVARS | \
- (CH_USE_SEMAPHORES && CH_USE_SEMAPHORES_PRIORITY) | \
- (CH_USE_MESSAGES && CH_USE_MESSAGES_PRIORITY)
-#if CH_USE_CONDVARS
- case THD_STATE_WTCOND:
-#endif
-#if CH_USE_SEMAPHORES && CH_USE_SEMAPHORES_PRIORITY
- case THD_STATE_WTSEM:
-#endif
-#if CH_USE_MESSAGES && CH_USE_MESSAGES_PRIORITY
- case THD_STATE_SNDMSGQ:
-#endif
- /* Re-enqueues tp with its new priority on the queue.*/
- prio_insert(dequeue(tp), (ThreadsQueue *)tp->p_u.wtobjp);
- break;
-#endif
- case THD_STATE_READY:
-#if CH_DBG_ENABLE_ASSERTS
- /* Prevents an assertion in chSchReadyI().*/
- tp->p_state = THD_STATE_CURRENT;
-#endif
- /* Re-enqueues tp with its new priority on the ready list.*/
- chSchReadyI(dequeue(tp));
- break;
- }
- break;
- }
- /* Sleep on the mutex.*/
- prio_insert(ctp, &mp->m_queue);
- ctp->p_u.wtobjp = mp;
- chSchGoSleepS(THD_STATE_WTMTX);
- /* It is assumed that the thread performing the unlock operation assigns
- the mutex to this thread.*/
- chDbgAssert(mp->m_owner == ctp, "chMtxLockS(), #1", "not owner");
- chDbgAssert(ctp->p_mtxlist == mp, "chMtxLockS(), #2", "not owned");
- }
- else {
- /* It was not owned, inserted in the owned mutexes list.*/
- mp->m_owner = ctp;
- mp->m_next = ctp->p_mtxlist;
- ctp->p_mtxlist = mp;
- }
-}
-
-/**
- * @brief Tries to lock a mutex.
- * @details This function attempts to lock a mutex, if the mutex is already
- * locked by another thread then the function exits without waiting.
- * @post The mutex is locked and inserted in the per-thread stack of owned
- * mutexes.
- * @note This function does not have any overhead related to the
- * priority inheritance mechanism because it does not try to
- * enter a sleep state.
- *
- * @param[in] mp pointer to the @p Mutex structure
- * @return The operation status.
- * @retval TRUE if the mutex has been successfully acquired
- * @retval FALSE if the lock attempt failed.
- *
- * @api
- */
-bool_t chMtxTryLock(Mutex *mp) {
- bool_t b;
-
- chSysLock();
-
- b = chMtxTryLockS(mp);
-
- chSysUnlock();
- return b;
-}
-
-/**
- * @brief Tries to lock a mutex.
- * @details This function attempts to lock a mutex, if the mutex is already
- * taken by another thread then the function exits without waiting.
- * @post The mutex is locked and inserted in the per-thread stack of owned
- * mutexes.
- * @note This function does not have any overhead related to the
- * priority inheritance mechanism because it does not try to
- * enter a sleep state.
- *
- * @param[in] mp pointer to the @p Mutex structure
- * @return The operation status.
- * @retval TRUE if the mutex has been successfully acquired
- * @retval FALSE if the lock attempt failed.
- *
- * @sclass
- */
-bool_t chMtxTryLockS(Mutex *mp) {
-
- chDbgCheckClassS();
- chDbgCheck(mp != NULL, "chMtxTryLockS");
-
- if (mp->m_owner != NULL)
- return FALSE;
- mp->m_owner = currp;
- mp->m_next = currp->p_mtxlist;
- currp->p_mtxlist = mp;
- return TRUE;
-}
-
-/**
- * @brief Unlocks the next owned mutex in reverse lock order.
- * @pre The invoking thread <b>must</b> have at least one owned mutex.
- * @post The mutex is unlocked and removed from the per-thread stack of
- * owned mutexes.
- *
- * @return A pointer to the unlocked mutex.
- *
- * @api
- */
-Mutex *chMtxUnlock(void) {
- Thread *ctp = currp;
- Mutex *ump, *mp;
-
- chSysLock();
- chDbgAssert(ctp->p_mtxlist != NULL,
- "chMtxUnlock(), #1",
- "owned mutexes list empty");
- chDbgAssert(ctp->p_mtxlist->m_owner == ctp,
- "chMtxUnlock(), #2",
- "ownership failure");
- /* Removes the top Mutex from the Thread's owned mutexes list and marks it
- as not owned.*/
- ump = ctp->p_mtxlist;
- ctp->p_mtxlist = ump->m_next;
- /* If a thread is waiting on the mutex then the fun part begins.*/
- if (chMtxQueueNotEmptyS(ump)) {
- Thread *tp;
-
- /* Recalculates the optimal thread priority by scanning the owned
- mutexes list.*/
- tprio_t newprio = ctp->p_realprio;
- mp = ctp->p_mtxlist;
- while (mp != NULL) {
- /* If the highest priority thread waiting in the mutexes list has a
- greater priority than the current thread base priority then the final
- priority will have at least that priority.*/
- if (chMtxQueueNotEmptyS(mp) && (mp->m_queue.p_next->p_prio > newprio))
- newprio = mp->m_queue.p_next->p_prio;
- mp = mp->m_next;
- }
- /* Assigns to the current thread the highest priority among all the
- waiting threads.*/
- ctp->p_prio = newprio;
- /* Awakens the highest priority thread waiting for the unlocked mutex and
- assigns the mutex to it.*/
- tp = fifo_remove(&ump->m_queue);
- ump->m_owner = tp;
- ump->m_next = tp->p_mtxlist;
- tp->p_mtxlist = ump;
- chSchWakeupS(tp, RDY_OK);
- }
- else
- ump->m_owner = NULL;
- chSysUnlock();
- return ump;
-}
-
-/**
- * @brief Unlocks the next owned mutex in reverse lock order.
- * @pre The invoking thread <b>must</b> have at least one owned mutex.
- * @post The mutex is unlocked and removed from the per-thread stack of
- * owned mutexes.
- * @post This function does not reschedule so a call to a rescheduling
- * function must be performed before unlocking the kernel.
- *
- * @return A pointer to the unlocked mutex.
- *
- * @sclass
- */
-Mutex *chMtxUnlockS(void) {
- Thread *ctp = currp;
- Mutex *ump, *mp;
-
- chDbgCheckClassS();
- chDbgAssert(ctp->p_mtxlist != NULL,
- "chMtxUnlockS(), #1",
- "owned mutexes list empty");
- chDbgAssert(ctp->p_mtxlist->m_owner == ctp,
- "chMtxUnlockS(), #2",
- "ownership failure");
-
- /* Removes the top Mutex from the owned mutexes list and marks it as not
- owned.*/
- ump = ctp->p_mtxlist;
- ctp->p_mtxlist = ump->m_next;
- /* If a thread is waiting on the mutex then the fun part begins.*/
- if (chMtxQueueNotEmptyS(ump)) {
- Thread *tp;
-
- /* Recalculates the optimal thread priority by scanning the owned
- mutexes list.*/
- tprio_t newprio = ctp->p_realprio;
- mp = ctp->p_mtxlist;
- while (mp != NULL) {
- /* If the highest priority thread waiting in the mutexes list has a
- greater priority than the current thread base priority then the final
- priority will have at least that priority.*/
- if (chMtxQueueNotEmptyS(mp) && (mp->m_queue.p_next->p_prio > newprio))
- newprio = mp->m_queue.p_next->p_prio;
- mp = mp->m_next;
- }
- ctp->p_prio = newprio;
- /* Awakens the highest priority thread waiting for the unlocked mutex and
- assigns the mutex to it.*/
- tp = fifo_remove(&ump->m_queue);
- ump->m_owner = tp;
- ump->m_next = tp->p_mtxlist;
- tp->p_mtxlist = ump;
- chSchReadyI(tp);
- }
- else
- ump->m_owner = NULL;
- return ump;
-}
-
-/**
- * @brief Unlocks all the mutexes owned by the invoking thread.
- * @post The stack of owned mutexes is emptied and all the found
- * mutexes are unlocked.
- * @note This function is <b>MUCH MORE</b> efficient than releasing the
- * mutexes one by one and not just because the call overhead,
- * this function does not have any overhead related to the priority
- * inheritance mechanism.
- *
- * @api
- */
-void chMtxUnlockAll(void) {
- Thread *ctp = currp;
-
- chSysLock();
- if (ctp->p_mtxlist != NULL) {
- do {
- Mutex *ump = ctp->p_mtxlist;
- ctp->p_mtxlist = ump->m_next;
- if (chMtxQueueNotEmptyS(ump)) {
- Thread *tp = fifo_remove(&ump->m_queue);
- ump->m_owner = tp;
- ump->m_next = tp->p_mtxlist;
- tp->p_mtxlist = ump;
- chSchReadyI(tp);
- }
- else
- ump->m_owner = NULL;
- } while (ctp->p_mtxlist != NULL);
- ctp->p_prio = ctp->p_realprio;
- chSchRescheduleS();
- }
- chSysUnlock();
-}
-
-#endif /* CH_USE_MUTEXES */
-
-/** @} */
diff --git a/os/kernel/src/chqueues.c b/os/kernel/src/chqueues.c deleted file mode 100644 index 871e499a0..000000000 --- a/os/kernel/src/chqueues.c +++ /dev/null @@ -1,431 +0,0 @@ -/*
- ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
- 2011,2012,2013 Giovanni Di Sirio.
-
- This file is part of ChibiOS/RT.
-
- ChibiOS/RT is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- ChibiOS/RT is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-/**
- * @file chqueues.c
- * @brief I/O Queues code.
- *
- * @addtogroup io_queues
- * @details ChibiOS/RT queues are mostly used in serial-like device drivers.
- * The device drivers are usually designed to have a lower side
- * (lower driver, it is usually an interrupt service routine) and an
- * upper side (upper driver, accessed by the application threads).<br>
- * There are several kind of queues:<br>
- * - <b>Input queue</b>, unidirectional queue where the writer is the
- * lower side and the reader is the upper side.
- * - <b>Output queue</b>, unidirectional queue where the writer is the
- * upper side and the reader is the lower side.
- * - <b>Full duplex queue</b>, bidirectional queue. Full duplex queues
- * are implemented by pairing an input queue and an output queue
- * together.
- * .
- * @pre In order to use the I/O queues the @p CH_USE_QUEUES option must
- * be enabled in @p chconf.h.
- * @{
- */
-
-#include "ch.h"
-
-#if CH_USE_QUEUES || defined(__DOXYGEN__)
-
-/**
- * @brief Puts the invoking thread into the queue's threads queue.
- *
- * @param[out] qp pointer to an @p GenericQueue structure
- * @param[in] time the number of ticks before the operation timeouts,
- * the following special values are allowed:
- * - @a TIME_IMMEDIATE immediate timeout.
- * - @a TIME_INFINITE no timeout.
- * .
- * @return A message specifying how the invoking thread has been
- * released from threads queue.
- * @retval Q_OK is the normal exit, thread signaled.
- * @retval Q_RESET if the queue has been reset.
- * @retval Q_TIMEOUT if the queue operation timed out.
- */
-static msg_t qwait(GenericQueue *qp, systime_t time) {
-
- if (TIME_IMMEDIATE == time)
- return Q_TIMEOUT;
- currp->p_u.wtobjp = qp;
- queue_insert(currp, &qp->q_waiting);
- return chSchGoSleepTimeoutS(THD_STATE_WTQUEUE, time);
-}
-
-/**
- * @brief Initializes an input queue.
- * @details A Semaphore is internally initialized and works as a counter of
- * the bytes contained in the queue.
- * @note The callback is invoked from within the S-Locked system state,
- * see @ref system_states.
- *
- * @param[out] iqp pointer to an @p InputQueue structure
- * @param[in] bp pointer to a memory area allocated as queue buffer
- * @param[in] size size of the queue buffer
- * @param[in] infy pointer to a callback function that is invoked when
- * data is read from the queue. The value can be @p NULL.
- * @param[in] link application defined pointer
- *
- * @init
- */
-void chIQInit(InputQueue *iqp, uint8_t *bp, size_t size, qnotify_t infy,
- void *link) {
-
- queue_init(&iqp->q_waiting);
- iqp->q_counter = 0;
- iqp->q_buffer = iqp->q_rdptr = iqp->q_wrptr = bp;
- iqp->q_top = bp + size;
- iqp->q_notify = infy;
- iqp->q_link = link;
-}
-
-/**
- * @brief Resets an input queue.
- * @details All the data in the input queue is erased and lost, any waiting
- * thread is resumed with status @p Q_RESET.
- * @note A reset operation can be used by a low level driver in order to
- * obtain immediate attention from the high level layers.
- *
- * @param[in] iqp pointer to an @p InputQueue structure
- *
- * @iclass
- */
-void chIQResetI(InputQueue *iqp) {
-
- chDbgCheckClassI();
-
- iqp->q_rdptr = iqp->q_wrptr = iqp->q_buffer;
- iqp->q_counter = 0;
- while (notempty(&iqp->q_waiting))
- chSchReadyI(fifo_remove(&iqp->q_waiting))->p_u.rdymsg = Q_RESET;
-}
-
-/**
- * @brief Input queue write.
- * @details A byte value is written into the low end of an input queue.
- *
- * @param[in] iqp pointer to an @p InputQueue structure
- * @param[in] b the byte value to be written in the queue
- * @return The operation status.
- * @retval Q_OK if the operation has been completed with success.
- * @retval Q_FULL if the queue is full and the operation cannot be
- * completed.
- *
- * @iclass
- */
-msg_t chIQPutI(InputQueue *iqp, uint8_t b) {
-
- chDbgCheckClassI();
-
- if (chIQIsFullI(iqp))
- return Q_FULL;
-
- iqp->q_counter++;
- *iqp->q_wrptr++ = b;
- if (iqp->q_wrptr >= iqp->q_top)
- iqp->q_wrptr = iqp->q_buffer;
-
- if (notempty(&iqp->q_waiting))
- chSchReadyI(fifo_remove(&iqp->q_waiting))->p_u.rdymsg = Q_OK;
-
- return Q_OK;
-}
-
-/**
- * @brief Input queue read with timeout.
- * @details This function reads a byte value from an input queue. If the queue
- * is empty then the calling thread is suspended until a byte arrives
- * in the queue or a timeout occurs.
- * @note The callback is invoked before reading the character from the
- * buffer or before entering the state @p THD_STATE_WTQUEUE.
- *
- * @param[in] iqp pointer to an @p InputQueue structure
- * @param[in] time the number of ticks before the operation timeouts,
- * the following special values are allowed:
- * - @a TIME_IMMEDIATE immediate timeout.
- * - @a TIME_INFINITE no timeout.
- * .
- * @return A byte value from the queue.
- * @retval Q_TIMEOUT if the specified time expired.
- * @retval Q_RESET if the queue has been reset.
- *
- * @api
- */
-msg_t chIQGetTimeout(InputQueue *iqp, systime_t time) {
- uint8_t b;
-
- chSysLock();
- if (iqp->q_notify)
- iqp->q_notify(iqp);
-
- while (chIQIsEmptyI(iqp)) {
- msg_t msg;
- if ((msg = qwait((GenericQueue *)iqp, time)) < Q_OK) {
- chSysUnlock();
- return msg;
- }
- }
-
- iqp->q_counter--;
- b = *iqp->q_rdptr++;
- if (iqp->q_rdptr >= iqp->q_top)
- iqp->q_rdptr = iqp->q_buffer;
-
- chSysUnlock();
- return b;
-}
-
-/**
- * @brief Input queue read with timeout.
- * @details The function reads data from an input queue into a buffer. The
- * operation completes when the specified amount of data has been
- * transferred or after the specified timeout or if the queue has
- * been reset.
- * @note The function is not atomic, if you need atomicity it is suggested
- * to use a semaphore or a mutex for mutual exclusion.
- * @note The callback is invoked before reading each character from the
- * buffer or before entering the state @p THD_STATE_WTQUEUE.
- *
- * @param[in] iqp pointer to an @p InputQueue structure
- * @param[out] bp pointer to the data buffer
- * @param[in] n the maximum amount of data to be transferred, the
- * value 0 is reserved
- * @param[in] time the number of ticks before the operation timeouts,
- * the following special values are allowed:
- * - @a TIME_IMMEDIATE immediate timeout.
- * - @a TIME_INFINITE no timeout.
- * .
- * @return The number of bytes effectively transferred.
- *
- * @api
- */
-size_t chIQReadTimeout(InputQueue *iqp, uint8_t *bp,
- size_t n, systime_t time) {
- qnotify_t nfy = iqp->q_notify;
- size_t r = 0;
-
- chDbgCheck(n > 0, "chIQReadTimeout");
-
- chSysLock();
- while (TRUE) {
- if (nfy)
- nfy(iqp);
-
- while (chIQIsEmptyI(iqp)) {
- if (qwait((GenericQueue *)iqp, time) != Q_OK) {
- chSysUnlock();
- return r;
- }
- }
-
- iqp->q_counter--;
- *bp++ = *iqp->q_rdptr++;
- if (iqp->q_rdptr >= iqp->q_top)
- iqp->q_rdptr = iqp->q_buffer;
-
- chSysUnlock(); /* Gives a preemption chance in a controlled point.*/
- r++;
- if (--n == 0)
- return r;
-
- chSysLock();
- }
-}
-
-/**
- * @brief Initializes an output queue.
- * @details A Semaphore is internally initialized and works as a counter of
- * the free bytes in the queue.
- * @note The callback is invoked from within the S-Locked system state,
- * see @ref system_states.
- *
- * @param[out] oqp pointer to an @p OutputQueue structure
- * @param[in] bp pointer to a memory area allocated as queue buffer
- * @param[in] size size of the queue buffer
- * @param[in] onfy pointer to a callback function that is invoked when
- * data is written to the queue. The value can be @p NULL.
- * @param[in] link application defined pointer
- *
- * @init
- */
-void chOQInit(OutputQueue *oqp, uint8_t *bp, size_t size, qnotify_t onfy,
- void *link) {
-
- queue_init(&oqp->q_waiting);
- oqp->q_counter = size;
- oqp->q_buffer = oqp->q_rdptr = oqp->q_wrptr = bp;
- oqp->q_top = bp + size;
- oqp->q_notify = onfy;
- oqp->q_link = link;
-}
-
-/**
- * @brief Resets an output queue.
- * @details All the data in the output queue is erased and lost, any waiting
- * thread is resumed with status @p Q_RESET.
- * @note A reset operation can be used by a low level driver in order to
- * obtain immediate attention from the high level layers.
- *
- * @param[in] oqp pointer to an @p OutputQueue structure
- *
- * @iclass
- */
-void chOQResetI(OutputQueue *oqp) {
-
- chDbgCheckClassI();
-
- oqp->q_rdptr = oqp->q_wrptr = oqp->q_buffer;
- oqp->q_counter = chQSizeI(oqp);
- while (notempty(&oqp->q_waiting))
- chSchReadyI(fifo_remove(&oqp->q_waiting))->p_u.rdymsg = Q_RESET;
-}
-
-/**
- * @brief Output queue write with timeout.
- * @details This function writes a byte value to an output queue. If the queue
- * is full then the calling thread is suspended until there is space
- * in the queue or a timeout occurs.
- * @note The callback is invoked after writing the character into the
- * buffer.
- *
- * @param[in] oqp pointer to an @p OutputQueue structure
- * @param[in] b the byte value to be written in the queue
- * @param[in] time the number of ticks before the operation timeouts,
- * the following special values are allowed:
- * - @a TIME_IMMEDIATE immediate timeout.
- * - @a TIME_INFINITE no timeout.
- * .
- * @return The operation status.
- * @retval Q_OK if the operation succeeded.
- * @retval Q_TIMEOUT if the specified time expired.
- * @retval Q_RESET if the queue has been reset.
- *
- * @api
- */
-msg_t chOQPutTimeout(OutputQueue *oqp, uint8_t b, systime_t time) {
-
- chSysLock();
- while (chOQIsFullI(oqp)) {
- msg_t msg;
-
- if ((msg = qwait((GenericQueue *)oqp, time)) < Q_OK) {
- chSysUnlock();
- return msg;
- }
- }
-
- oqp->q_counter--;
- *oqp->q_wrptr++ = b;
- if (oqp->q_wrptr >= oqp->q_top)
- oqp->q_wrptr = oqp->q_buffer;
-
- if (oqp->q_notify)
- oqp->q_notify(oqp);
-
- chSysUnlock();
- return Q_OK;
-}
-
-/**
- * @brief Output queue read.
- * @details A byte value is read from the low end of an output queue.
- *
- * @param[in] oqp pointer to an @p OutputQueue structure
- * @return The byte value from the queue.
- * @retval Q_EMPTY if the queue is empty.
- *
- * @iclass
- */
-msg_t chOQGetI(OutputQueue *oqp) {
- uint8_t b;
-
- chDbgCheckClassI();
-
- if (chOQIsEmptyI(oqp))
- return Q_EMPTY;
-
- oqp->q_counter++;
- b = *oqp->q_rdptr++;
- if (oqp->q_rdptr >= oqp->q_top)
- oqp->q_rdptr = oqp->q_buffer;
-
- if (notempty(&oqp->q_waiting))
- chSchReadyI(fifo_remove(&oqp->q_waiting))->p_u.rdymsg = Q_OK;
-
- return b;
-}
-
-/**
- * @brief Output queue write with timeout.
- * @details The function writes data from a buffer to an output queue. The
- * operation completes when the specified amount of data has been
- * transferred or after the specified timeout or if the queue has
- * been reset.
- * @note The function is not atomic, if you need atomicity it is suggested
- * to use a semaphore or a mutex for mutual exclusion.
- * @note The callback is invoked after writing each character into the
- * buffer.
- *
- * @param[in] oqp pointer to an @p OutputQueue structure
- * @param[out] bp pointer to the data buffer
- * @param[in] n the maximum amount of data to be transferred, the
- * value 0 is reserved
- * @param[in] time the number of ticks before the operation timeouts,
- * the following special values are allowed:
- * - @a TIME_IMMEDIATE immediate timeout.
- * - @a TIME_INFINITE no timeout.
- * .
- * @return The number of bytes effectively transferred.
- *
- * @api
- */
-size_t chOQWriteTimeout(OutputQueue *oqp, const uint8_t *bp,
- size_t n, systime_t time) {
- qnotify_t nfy = oqp->q_notify;
- size_t w = 0;
-
- chDbgCheck(n > 0, "chOQWriteTimeout");
-
- chSysLock();
- while (TRUE) {
- while (chOQIsFullI(oqp)) {
- if (qwait((GenericQueue *)oqp, time) != Q_OK) {
- chSysUnlock();
- return w;
- }
- }
- oqp->q_counter--;
- *oqp->q_wrptr++ = *bp++;
- if (oqp->q_wrptr >= oqp->q_top)
- oqp->q_wrptr = oqp->q_buffer;
-
- if (nfy)
- nfy(oqp);
-
- chSysUnlock(); /* Gives a preemption chance in a controlled point.*/
- w++;
- if (--n == 0)
- return w;
- chSysLock();
- }
-}
-#endif /* CH_USE_QUEUES */
-
-/** @} */
diff --git a/os/kernel/src/chregistry.c b/os/kernel/src/chregistry.c deleted file mode 100644 index 645172833..000000000 --- a/os/kernel/src/chregistry.c +++ /dev/null @@ -1,156 +0,0 @@ -/*
- ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
- 2011,2012,2013 Giovanni Di Sirio.
-
- This file is part of ChibiOS/RT.
-
- ChibiOS/RT is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- ChibiOS/RT is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-/**
- * @file chregistry.c
- * @brief Threads registry code.
- *
- * @addtogroup registry
- * @details Threads Registry related APIs and services.
- *
- * <h2>Operation mode</h2>
- * The Threads Registry is a double linked list that holds all the
- * active threads in the system.<br>
- * Operations defined for the registry:
- * - <b>First</b>, returns the first, in creation order, active thread
- * in the system.
- * - <b>Next</b>, returns the next, in creation order, active thread
- * in the system.
- * .
- * The registry is meant to be mainly a debug feature, for example,
- * using the registry a debugger can enumerate the active threads
- * in any given moment or the shell can print the active threads
- * and their state.<br>
- * Another possible use is for centralized threads memory management,
- * terminating threads can pulse an event source and an event handler
- * can perform a scansion of the registry in order to recover the
- * memory.
- * @pre In order to use the threads registry the @p CH_USE_REGISTRY option
- * must be enabled in @p chconf.h.
- * @{
- */
-#include "ch.h"
-
-#if CH_USE_REGISTRY || defined(__DOXYGEN__)
-
-#define _offsetof(st, m) \
- ((size_t)((char *)&((st *)0)->m - (char *)0))
-
-/*
- * OS signature in ROM plus debug-related information.
- */
-ROMCONST chdebug_t ch_debug = {
- "main",
- (uint8_t)0,
- (uint8_t)sizeof (chdebug_t),
- (uint16_t)((CH_KERNEL_MAJOR << 11) |
- (CH_KERNEL_MINOR << 6) |
- (CH_KERNEL_PATCH) << 0),
- (uint8_t)sizeof (void *),
- (uint8_t)sizeof (systime_t),
- (uint8_t)sizeof (Thread),
- (uint8_t)_offsetof(Thread, p_prio),
- (uint8_t)_offsetof(Thread, p_ctx),
- (uint8_t)_offsetof(Thread, p_newer),
- (uint8_t)_offsetof(Thread, p_older),
- (uint8_t)_offsetof(Thread, p_name),
-#if CH_DBG_ENABLE_STACK_CHECK
- (uint8_t)_offsetof(Thread, p_stklimit),
-#else
- (uint8_t)0,
-#endif
- (uint8_t)_offsetof(Thread, p_state),
- (uint8_t)_offsetof(Thread, p_flags),
-#if CH_USE_DYNAMIC
- (uint8_t)_offsetof(Thread, p_refs),
-#else
- (uint8_t)0,
-#endif
-#if CH_TIME_QUANTUM > 0
- (uint8_t)_offsetof(Thread, p_preempt),
-#else
- (uint8_t)0,
-#endif
-#if CH_DBG_THREADS_PROFILING
- (uint8_t)_offsetof(Thread, p_time)
-#else
- (uint8_t)0
-#endif
-};
-
-/**
- * @brief Returns the first thread in the system.
- * @details Returns the most ancient thread in the system, usually this is
- * the main thread unless it terminated. A reference is added to the
- * returned thread in order to make sure its status is not lost.
- * @note This function cannot return @p NULL because there is always at
- * least one thread in the system.
- *
- * @return A reference to the most ancient thread.
- *
- * @api
- */
-Thread *chRegFirstThread(void) {
- Thread *tp;
-
- chSysLock();
- tp = rlist.r_newer;
-#if CH_USE_DYNAMIC
- tp->p_refs++;
-#endif
- chSysUnlock();
- return tp;
-}
-
-/**
- * @brief Returns the thread next to the specified one.
- * @details The reference counter of the specified thread is decremented and
- * the reference counter of the returned thread is incremented.
- *
- * @param[in] tp pointer to the thread
- * @return A reference to the next thread.
- * @retval NULL if there is no next thread.
- *
- * @api
- */
-Thread *chRegNextThread(Thread *tp) {
- Thread *ntp;
-
- chSysLock();
- ntp = tp->p_newer;
- if (ntp == (Thread *)&rlist)
- ntp = NULL;
-#if CH_USE_DYNAMIC
- else {
- chDbgAssert(ntp->p_refs < 255, "chRegNextThread(), #1",
- "too many references");
- ntp->p_refs++;
- }
-#endif
- chSysUnlock();
-#if CH_USE_DYNAMIC
- chThdRelease(tp);
-#endif
- return ntp;
-}
-
-#endif /* CH_USE_REGISTRY */
-
-/** @} */
diff --git a/os/kernel/src/chschd.c b/os/kernel/src/chschd.c deleted file mode 100644 index 1106cf03f..000000000 --- a/os/kernel/src/chschd.c +++ /dev/null @@ -1,378 +0,0 @@ -/*
- ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
- 2011,2012,2013 Giovanni Di Sirio.
-
- This file is part of ChibiOS/RT.
-
- ChibiOS/RT is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- ChibiOS/RT is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-/**
- * @file chschd.c
- * @brief Scheduler code.
- *
- * @addtogroup scheduler
- * @details This module provides the default portable scheduler code,
- * scheduler functions can be individually captured by the port
- * layer in order to provide architecture optimized equivalents.
- * When a function is captured its default code is not built into
- * the OS image, the optimized version is included instead.
- * @{
- */
-
-#include "ch.h"
-
-/**
- * @brief Ready list header.
- */
-#if !defined(PORT_OPTIMIZED_RLIST_VAR) || defined(__DOXYGEN__)
-ReadyList rlist;
-#endif /* !defined(PORT_OPTIMIZED_RLIST_VAR) */
-
-/**
- * @brief Scheduler initialization.
- *
- * @notapi
- */
-void _scheduler_init(void) {
-
- queue_init(&rlist.r_queue);
- rlist.r_prio = NOPRIO;
-#if CH_USE_REGISTRY
- rlist.r_newer = rlist.r_older = (Thread *)&rlist;
-#endif
-}
-
-/**
- * @brief Inserts a thread in the Ready List.
- * @details The thread is positioned behind all threads with higher or equal
- * priority.
- * @pre The thread must not be already inserted in any list through its
- * @p p_next and @p p_prev or list corruption would occur.
- * @post This function does not reschedule so a call to a rescheduling
- * function must be performed before unlocking the kernel. Note that
- * interrupt handlers always reschedule on exit so an explicit
- * reschedule must not be performed in ISRs.
- *
- * @param[in] tp the thread to be made ready
- * @return The thread pointer.
- *
- * @iclass
- */
-#if !defined(PORT_OPTIMIZED_READYI) || defined(__DOXYGEN__)
-Thread *chSchReadyI(Thread *tp) {
- Thread *cp;
-
- chDbgCheckClassI();
-
- /* Integrity checks.*/
- chDbgAssert((tp->p_state != THD_STATE_READY) &&
- (tp->p_state != THD_STATE_FINAL),
- "chSchReadyI(), #1",
- "invalid state");
-
- tp->p_state = THD_STATE_READY;
- cp = (Thread *)&rlist.r_queue;
- do {
- cp = cp->p_next;
- } while (cp->p_prio >= tp->p_prio);
- /* Insertion on p_prev.*/
- tp->p_next = cp;
- tp->p_prev = cp->p_prev;
- tp->p_prev->p_next = cp->p_prev = tp;
- return tp;
-}
-#endif /* !defined(PORT_OPTIMIZED_READYI) */
-
-/**
- * @brief Puts the current thread to sleep into the specified state.
- * @details The thread goes into a sleeping state. The possible
- * @ref thread_states are defined into @p threads.h.
- *
- * @param[in] newstate the new thread state
- *
- * @sclass
- */
-#if !defined(PORT_OPTIMIZED_GOSLEEPS) || defined(__DOXYGEN__)
-void chSchGoSleepS(tstate_t newstate) {
- Thread *otp;
-
- chDbgCheckClassS();
-
- (otp = currp)->p_state = newstate;
-#if CH_TIME_QUANTUM > 0
- /* The thread is renouncing its remaining time slices so it will have a new
- time quantum when it will wakeup.*/
- otp->p_preempt = CH_TIME_QUANTUM;
-#endif
- setcurrp(fifo_remove(&rlist.r_queue));
- currp->p_state = THD_STATE_CURRENT;
- chSysSwitch(currp, otp);
-}
-#endif /* !defined(PORT_OPTIMIZED_GOSLEEPS) */
-
-#if !defined(PORT_OPTIMIZED_GOSLEEPTIMEOUTS) || defined(__DOXYGEN__)
-/*
- * Timeout wakeup callback.
- */
-static void wakeup(void *p) {
- Thread *tp = (Thread *)p;
-
- chSysLockFromIsr();
- switch (tp->p_state) {
- case THD_STATE_READY:
- /* Handling the special case where the thread has been made ready by
- another thread with higher priority.*/
- chSysUnlockFromIsr();
- return;
-#if CH_USE_SEMAPHORES || CH_USE_QUEUES || \
- (CH_USE_CONDVARS && CH_USE_CONDVARS_TIMEOUT)
-#if CH_USE_SEMAPHORES
- case THD_STATE_WTSEM:
- chSemFastSignalI((Semaphore *)tp->p_u.wtobjp);
- /* Falls into, intentional. */
-#endif
-#if CH_USE_QUEUES
- case THD_STATE_WTQUEUE:
-#endif
-#if CH_USE_CONDVARS && CH_USE_CONDVARS_TIMEOUT
- case THD_STATE_WTCOND:
-#endif
- /* States requiring dequeuing.*/
- dequeue(tp);
-#endif
- }
- tp->p_u.rdymsg = RDY_TIMEOUT;
- chSchReadyI(tp);
- chSysUnlockFromIsr();
-}
-
-/**
- * @brief Puts the current thread to sleep into the specified state with
- * timeout specification.
- * @details The thread goes into a sleeping state, if it is not awakened
- * explicitly within the specified timeout then it is forcibly
- * awakened with a @p RDY_TIMEOUT low level message. The possible
- * @ref thread_states are defined into @p threads.h.
- *
- * @param[in] newstate the new thread state
- * @param[in] time the number of ticks before the operation timeouts, the
- * special values are handled as follow:
- * - @a TIME_INFINITE the thread enters an infinite sleep
- * state, this is equivalent to invoking
- * @p chSchGoSleepS() but, of course, less efficient.
- * - @a TIME_IMMEDIATE this value is not allowed.
- * .
- * @return The wakeup message.
- * @retval RDY_TIMEOUT if a timeout occurs.
- *
- * @sclass
- */
-msg_t chSchGoSleepTimeoutS(tstate_t newstate, systime_t time) {
-
- chDbgCheckClassS();
-
- if (TIME_INFINITE != time) {
- VirtualTimer vt;
-
- chVTSetI(&vt, time, wakeup, currp);
- chSchGoSleepS(newstate);
- if (chVTIsArmedI(&vt))
- chVTResetI(&vt);
- }
- else
- chSchGoSleepS(newstate);
- return currp->p_u.rdymsg;
-}
-#endif /* !defined(PORT_OPTIMIZED_GOSLEEPTIMEOUTS) */
-
-/**
- * @brief Wakes up a thread.
- * @details The thread is inserted into the ready list or immediately made
- * running depending on its relative priority compared to the current
- * thread.
- * @pre The thread must not be already inserted in any list through its
- * @p p_next and @p p_prev or list corruption would occur.
- * @note It is equivalent to a @p chSchReadyI() followed by a
- * @p chSchRescheduleS() but much more efficient.
- * @note The function assumes that the current thread has the highest
- * priority.
- *
- * @param[in] ntp the Thread to be made ready
- * @param[in] msg message to the awakened thread
- *
- * @sclass
- */
-#if !defined(PORT_OPTIMIZED_WAKEUPS) || defined(__DOXYGEN__)
-void chSchWakeupS(Thread *ntp, msg_t msg) {
-
- chDbgCheckClassS();
-
- ntp->p_u.rdymsg = msg;
- /* If the waken thread has a not-greater priority than the current
- one then it is just inserted in the ready list else it made
- running immediately and the invoking thread goes in the ready
- list instead.*/
- if (ntp->p_prio <= currp->p_prio)
- chSchReadyI(ntp);
- else {
- Thread *otp = chSchReadyI(currp);
- setcurrp(ntp);
- ntp->p_state = THD_STATE_CURRENT;
- chSysSwitch(ntp, otp);
- }
-}
-#endif /* !defined(PORT_OPTIMIZED_WAKEUPS) */
-
-/**
- * @brief Performs a reschedule if a higher priority thread is runnable.
- * @details If a thread with a higher priority than the current thread is in
- * the ready list then make the higher priority thread running.
- *
- * @sclass
- */
-#if !defined(PORT_OPTIMIZED_RESCHEDULES) || defined(__DOXYGEN__)
-void chSchRescheduleS(void) {
-
- chDbgCheckClassS();
-
- if (chSchIsRescRequiredI())
- chSchDoRescheduleAhead();
-}
-#endif /* !defined(PORT_OPTIMIZED_RESCHEDULES) */
-
-/**
- * @brief Evaluates if preemption is required.
- * @details The decision is taken by comparing the relative priorities and
- * depending on the state of the round robin timeout counter.
- * @note Not a user function, it is meant to be invoked by the scheduler
- * itself or from within the port layer.
- *
- * @retval TRUE if there is a thread that must go in running state
- * immediately.
- * @retval FALSE if preemption is not required.
- *
- * @special
- */
-#if !defined(PORT_OPTIMIZED_ISPREEMPTIONREQUIRED) || defined(__DOXYGEN__)
-bool_t chSchIsPreemptionRequired(void) {
- tprio_t p1 = firstprio(&rlist.r_queue);
- tprio_t p2 = currp->p_prio;
-#if CH_TIME_QUANTUM > 0
- /* If the running thread has not reached its time quantum, reschedule only
- if the first thread on the ready queue has a higher priority.
- Otherwise, if the running thread has used up its time quantum, reschedule
- if the first thread on the ready queue has equal or higher priority.*/
- return currp->p_preempt ? p1 > p2 : p1 >= p2;
-#else
- /* If the round robin preemption feature is not enabled then performs a
- simpler comparison.*/
- return p1 > p2;
-#endif
-}
-#endif /* !defined(PORT_OPTIMIZED_ISPREEMPTIONREQUIRED) */
-
-/**
- * @brief Switches to the first thread on the runnable queue.
- * @details The current thread is positioned in the ready list behind all
- * threads having the same priority. The thread regains its time
- * quantum.
- * @note Not a user function, it is meant to be invoked by the scheduler
- * itself or from within the port layer.
- *
- * @special
- */
-#if !defined(PORT_OPTIMIZED_DORESCHEDULEBEHIND) || defined(__DOXYGEN__)
-void chSchDoRescheduleBehind(void) {
- Thread *otp;
-
- otp = currp;
- /* Picks the first thread from the ready queue and makes it current.*/
- setcurrp(fifo_remove(&rlist.r_queue));
- currp->p_state = THD_STATE_CURRENT;
-#if CH_TIME_QUANTUM > 0
- otp->p_preempt = CH_TIME_QUANTUM;
-#endif
- chSchReadyI(otp);
- chSysSwitch(currp, otp);
-}
-#endif /* !defined(PORT_OPTIMIZED_DORESCHEDULEBEHIND) */
-
-/**
- * @brief Switches to the first thread on the runnable queue.
- * @details The current thread is positioned in the ready list ahead of all
- * threads having the same priority.
- * @note Not a user function, it is meant to be invoked by the scheduler
- * itself or from within the port layer.
- *
- * @special
- */
-#if !defined(PORT_OPTIMIZED_DORESCHEDULEAHEAD) || defined(__DOXYGEN__)
-void chSchDoRescheduleAhead(void) {
- Thread *otp, *cp;
-
- otp = currp;
- /* Picks the first thread from the ready queue and makes it current.*/
- setcurrp(fifo_remove(&rlist.r_queue));
- currp->p_state = THD_STATE_CURRENT;
-
- otp->p_state = THD_STATE_READY;
- cp = (Thread *)&rlist.r_queue;
- do {
- cp = cp->p_next;
- } while (cp->p_prio > otp->p_prio);
- /* Insertion on p_prev.*/
- otp->p_next = cp;
- otp->p_prev = cp->p_prev;
- otp->p_prev->p_next = cp->p_prev = otp;
-
- chSysSwitch(currp, otp);
-}
-#endif /* !defined(PORT_OPTIMIZED_DORESCHEDULEAHEAD) */
-
-/**
- * @brief Switches to the first thread on the runnable queue.
- * @details The current thread is positioned in the ready list behind or
- * ahead of all threads having the same priority depending on
- * if it used its whole time slice.
- * @note Not a user function, it is meant to be invoked by the scheduler
- * itself or from within the port layer.
- *
- * @special
- */
-#if !defined(PORT_OPTIMIZED_DORESCHEDULE) || defined(__DOXYGEN__)
-void chSchDoReschedule(void) {
-
-#if CH_TIME_QUANTUM > 0
- /* If CH_TIME_QUANTUM is enabled then there are two different scenarios to
- handle on preemption: time quantum elapsed or not.*/
- if (currp->p_preempt == 0) {
- /* The thread consumed its time quantum so it is enqueued behind threads
- with same priority level, however, it acquires a new time quantum.*/
- chSchDoRescheduleBehind();
- }
- else {
- /* The thread didn't consume all its time quantum so it is put ahead of
- threads with equal priority and does not acquire a new time quantum.*/
- chSchDoRescheduleAhead();
- }
-#else /* !(CH_TIME_QUANTUM > 0) */
- /* If the round-robin mechanism is disabled then the thread goes always
- ahead of its peers.*/
- chSchDoRescheduleAhead();
-#endif /* !(CH_TIME_QUANTUM > 0) */
-}
-#endif /* !defined(PORT_OPTIMIZED_DORESCHEDULE) */
-
-/** @} */
diff --git a/os/kernel/src/chsem.c b/os/kernel/src/chsem.c deleted file mode 100644 index c9e429beb..000000000 --- a/os/kernel/src/chsem.c +++ /dev/null @@ -1,393 +0,0 @@ -/*
- ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
- 2011,2012,2013 Giovanni Di Sirio.
-
- This file is part of ChibiOS/RT.
-
- ChibiOS/RT is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- ChibiOS/RT is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-/**
- * @file chsem.c
- * @brief Semaphores code.
- *
- * @addtogroup semaphores
- * @details Semaphores related APIs and services.
- *
- * <h2>Operation mode</h2>
- * Semaphores are a flexible synchronization primitive, ChibiOS/RT
- * implements semaphores in their "counting semaphores" variant as
- * defined by Edsger Dijkstra plus several enhancements like:
- * - Wait operation with timeout.
- * - Reset operation.
- * - Atomic wait+signal operation.
- * - Return message from the wait operation (OK, RESET, TIMEOUT).
- * .
- * The binary semaphores variant can be easily implemented using
- * counting semaphores.<br>
- * Operations defined for semaphores:
- * - <b>Signal</b>: The semaphore counter is increased and if the
- * result is non-positive then a waiting thread is removed from
- * the semaphore queue and made ready for execution.
- * - <b>Wait</b>: The semaphore counter is decreased and if the result
- * becomes negative the thread is queued in the semaphore and
- * suspended.
- * - <b>Reset</b>: The semaphore counter is reset to a non-negative
- * value and all the threads in the queue are released.
- * .
- * Semaphores can be used as guards for mutual exclusion zones
- * (note that mutexes are recommended for this kind of use) but
- * also have other uses, queues guards and counters for example.<br>
- * Semaphores usually use a FIFO queuing strategy but it is possible
- * to make them order threads by priority by enabling
- * @p CH_USE_SEMAPHORES_PRIORITY in @p chconf.h.
- * @pre In order to use the semaphore APIs the @p CH_USE_SEMAPHORES
- * option must be enabled in @p chconf.h.
- * @{
- */
-
-#include "ch.h"
-
-#if CH_USE_SEMAPHORES || defined(__DOXYGEN__)
-
-#if CH_USE_SEMAPHORES_PRIORITY
-#define sem_insert(tp, qp) prio_insert(tp, qp)
-#else
-#define sem_insert(tp, qp) queue_insert(tp, qp)
-#endif
-
-/**
- * @brief Initializes a semaphore with the specified counter value.
- *
- * @param[out] sp pointer to a @p Semaphore structure
- * @param[in] n initial value of the semaphore counter. Must be
- * non-negative.
- *
- * @init
- */
-void chSemInit(Semaphore *sp, cnt_t n) {
-
- chDbgCheck((sp != NULL) && (n >= 0), "chSemInit");
-
- queue_init(&sp->s_queue);
- sp->s_cnt = n;
-}
-
-/**
- * @brief Performs a reset operation on the semaphore.
- * @post After invoking this function all the threads waiting on the
- * semaphore, if any, are released and the semaphore counter is set
- * to the specified, non negative, value.
- * @note The released threads can recognize they were waked up by a reset
- * rather than a signal because the @p chSemWait() will return
- * @p RDY_RESET instead of @p RDY_OK.
- *
- * @param[in] sp pointer to a @p Semaphore structure
- * @param[in] n the new value of the semaphore counter. The value must
- * be non-negative.
- *
- * @api
- */
-void chSemReset(Semaphore *sp, cnt_t n) {
-
- chSysLock();
- chSemResetI(sp, n);
- chSchRescheduleS();
- chSysUnlock();
-}
-
-/**
- * @brief Performs a reset operation on the semaphore.
- * @post After invoking this function all the threads waiting on the
- * semaphore, if any, are released and the semaphore counter is set
- * to the specified, non negative, value.
- * @post This function does not reschedule so a call to a rescheduling
- * function must be performed before unlocking the kernel. Note that
- * interrupt handlers always reschedule on exit so an explicit
- * reschedule must not be performed in ISRs.
- * @note The released threads can recognize they were waked up by a reset
- * rather than a signal because the @p chSemWait() will return
- * @p RDY_RESET instead of @p RDY_OK.
- *
- * @param[in] sp pointer to a @p Semaphore structure
- * @param[in] n the new value of the semaphore counter. The value must
- * be non-negative.
- *
- * @iclass
- */
-void chSemResetI(Semaphore *sp, cnt_t n) {
- cnt_t cnt;
-
- chDbgCheckClassI();
- chDbgCheck((sp != NULL) && (n >= 0), "chSemResetI");
- chDbgAssert(((sp->s_cnt >= 0) && isempty(&sp->s_queue)) ||
- ((sp->s_cnt < 0) && notempty(&sp->s_queue)),
- "chSemResetI(), #1",
- "inconsistent semaphore");
-
- cnt = sp->s_cnt;
- sp->s_cnt = n;
- while (++cnt <= 0)
- chSchReadyI(lifo_remove(&sp->s_queue))->p_u.rdymsg = RDY_RESET;
-}
-
-/**
- * @brief Performs a wait operation on a semaphore.
- *
- * @param[in] sp pointer to a @p Semaphore structure
- * @return A message specifying how the invoking thread has been
- * released from the semaphore.
- * @retval RDY_OK if the thread has not stopped on the semaphore or the
- * semaphore has been signaled.
- * @retval RDY_RESET if the semaphore has been reset using @p chSemReset().
- *
- * @api
- */
-msg_t chSemWait(Semaphore *sp) {
- msg_t msg;
-
- chSysLock();
- msg = chSemWaitS(sp);
- chSysUnlock();
- return msg;
-}
-
-/**
- * @brief Performs a wait operation on a semaphore.
- *
- * @param[in] sp pointer to a @p Semaphore structure
- * @return A message specifying how the invoking thread has been
- * released from the semaphore.
- * @retval RDY_OK if the thread has not stopped on the semaphore or the
- * semaphore has been signaled.
- * @retval RDY_RESET if the semaphore has been reset using @p chSemReset().
- *
- * @sclass
- */
-msg_t chSemWaitS(Semaphore *sp) {
-
- chDbgCheckClassS();
- chDbgCheck(sp != NULL, "chSemWaitS");
- chDbgAssert(((sp->s_cnt >= 0) && isempty(&sp->s_queue)) ||
- ((sp->s_cnt < 0) && notempty(&sp->s_queue)),
- "chSemWaitS(), #1",
- "inconsistent semaphore");
-
- if (--sp->s_cnt < 0) {
- currp->p_u.wtobjp = sp;
- sem_insert(currp, &sp->s_queue);
- chSchGoSleepS(THD_STATE_WTSEM);
- return currp->p_u.rdymsg;
- }
- return RDY_OK;
-}
-
-/**
- * @brief Performs a wait operation on a semaphore with timeout specification.
- *
- * @param[in] sp pointer to a @p Semaphore structure
- * @param[in] time the number of ticks before the operation timeouts,
- * the following special values are allowed:
- * - @a TIME_IMMEDIATE immediate timeout.
- * - @a TIME_INFINITE no timeout.
- * .
- * @return A message specifying how the invoking thread has been
- * released from the semaphore.
- * @retval RDY_OK if the thread has not stopped on the semaphore or the
- * semaphore has been signaled.
- * @retval RDY_RESET if the semaphore has been reset using @p chSemReset().
- * @retval RDY_TIMEOUT if the semaphore has not been signaled or reset within
- * the specified timeout.
- *
- * @api
- */
-msg_t chSemWaitTimeout(Semaphore *sp, systime_t time) {
- msg_t msg;
-
- chSysLock();
- msg = chSemWaitTimeoutS(sp, time);
- chSysUnlock();
- return msg;
-}
-
-/**
- * @brief Performs a wait operation on a semaphore with timeout specification.
- *
- * @param[in] sp pointer to a @p Semaphore structure
- * @param[in] time the number of ticks before the operation timeouts,
- * the following special values are allowed:
- * - @a TIME_IMMEDIATE immediate timeout.
- * - @a TIME_INFINITE no timeout.
- * .
- * @return A message specifying how the invoking thread has been
- * released from the semaphore.
- * @retval RDY_OK if the thread has not stopped on the semaphore or the
- * semaphore has been signaled.
- * @retval RDY_RESET if the semaphore has been reset using @p chSemReset().
- * @retval RDY_TIMEOUT if the semaphore has not been signaled or reset within
- * the specified timeout.
- *
- * @sclass
- */
-msg_t chSemWaitTimeoutS(Semaphore *sp, systime_t time) {
-
- chDbgCheckClassS();
- chDbgCheck(sp != NULL, "chSemWaitTimeoutS");
- chDbgAssert(((sp->s_cnt >= 0) && isempty(&sp->s_queue)) ||
- ((sp->s_cnt < 0) && notempty(&sp->s_queue)),
- "chSemWaitTimeoutS(), #1",
- "inconsistent semaphore");
-
- if (--sp->s_cnt < 0) {
- if (TIME_IMMEDIATE == time) {
- sp->s_cnt++;
- return RDY_TIMEOUT;
- }
- currp->p_u.wtobjp = sp;
- sem_insert(currp, &sp->s_queue);
- return chSchGoSleepTimeoutS(THD_STATE_WTSEM, time);
- }
- return RDY_OK;
-}
-
-/**
- * @brief Performs a signal operation on a semaphore.
- *
- * @param[in] sp pointer to a @p Semaphore structure
- *
- * @api
- */
-void chSemSignal(Semaphore *sp) {
-
- chDbgCheck(sp != NULL, "chSemSignal");
- chDbgAssert(((sp->s_cnt >= 0) && isempty(&sp->s_queue)) ||
- ((sp->s_cnt < 0) && notempty(&sp->s_queue)),
- "chSemSignal(), #1",
- "inconsistent semaphore");
-
- chSysLock();
- if (++sp->s_cnt <= 0)
- chSchWakeupS(fifo_remove(&sp->s_queue), RDY_OK);
- chSysUnlock();
-}
-
-/**
- * @brief Performs a signal operation on a semaphore.
- * @post This function does not reschedule so a call to a rescheduling
- * function must be performed before unlocking the kernel. Note that
- * interrupt handlers always reschedule on exit so an explicit
- * reschedule must not be performed in ISRs.
- *
- * @param[in] sp pointer to a @p Semaphore structure
- *
- * @iclass
- */
-void chSemSignalI(Semaphore *sp) {
-
- chDbgCheckClassI();
- chDbgCheck(sp != NULL, "chSemSignalI");
- chDbgAssert(((sp->s_cnt >= 0) && isempty(&sp->s_queue)) ||
- ((sp->s_cnt < 0) && notempty(&sp->s_queue)),
- "chSemSignalI(), #1",
- "inconsistent semaphore");
-
- if (++sp->s_cnt <= 0) {
- /* Note, it is done this way in order to allow a tail call on
- chSchReadyI().*/
- Thread *tp = fifo_remove(&sp->s_queue);
- tp->p_u.rdymsg = RDY_OK;
- chSchReadyI(tp);
- }
-}
-
-/**
- * @brief Adds the specified value to the semaphore counter.
- * @post This function does not reschedule so a call to a rescheduling
- * function must be performed before unlocking the kernel. Note that
- * interrupt handlers always reschedule on exit so an explicit
- * reschedule must not be performed in ISRs.
- *
- * @param[in] sp pointer to a @p Semaphore structure
- * @param[in] n value to be added to the semaphore counter. The value
- * must be positive.
- *
- * @iclass
- */
-void chSemAddCounterI(Semaphore *sp, cnt_t n) {
-
- chDbgCheckClassI();
- chDbgCheck((sp != NULL) && (n > 0), "chSemAddCounterI");
- chDbgAssert(((sp->s_cnt >= 0) && isempty(&sp->s_queue)) ||
- ((sp->s_cnt < 0) && notempty(&sp->s_queue)),
- "chSemAddCounterI(), #1",
- "inconsistent semaphore");
-
- while (n > 0) {
- if (++sp->s_cnt <= 0)
- chSchReadyI(fifo_remove(&sp->s_queue))->p_u.rdymsg = RDY_OK;
- n--;
- }
-}
-
-#if CH_USE_SEMSW || defined(__DOXYGEN__)
-/**
- * @brief Performs atomic signal and wait operations on two semaphores.
- * @pre The configuration option @p CH_USE_SEMSW must be enabled in order
- * to use this function.
- *
- * @param[in] sps pointer to a @p Semaphore structure to be signaled
- * @param[in] spw pointer to a @p Semaphore structure to wait on
- * @return A message specifying how the invoking thread has been
- * released from the semaphore.
- * @retval RDY_OK if the thread has not stopped on the semaphore or the
- * semaphore has been signaled.
- * @retval RDY_RESET if the semaphore has been reset using @p chSemReset().
- *
- * @api
- */
-msg_t chSemSignalWait(Semaphore *sps, Semaphore *spw) {
- msg_t msg;
-
- chDbgCheck((sps != NULL) && (spw != NULL), "chSemSignalWait");
- chDbgAssert(((sps->s_cnt >= 0) && isempty(&sps->s_queue)) ||
- ((sps->s_cnt < 0) && notempty(&sps->s_queue)),
- "chSemSignalWait(), #1",
- "inconsistent semaphore");
- chDbgAssert(((spw->s_cnt >= 0) && isempty(&spw->s_queue)) ||
- ((spw->s_cnt < 0) && notempty(&spw->s_queue)),
- "chSemSignalWait(), #2",
- "inconsistent semaphore");
-
- chSysLock();
- if (++sps->s_cnt <= 0)
- chSchReadyI(fifo_remove(&sps->s_queue))->p_u.rdymsg = RDY_OK;
- if (--spw->s_cnt < 0) {
- Thread *ctp = currp;
- sem_insert(ctp, &spw->s_queue);
- ctp->p_u.wtobjp = spw;
- chSchGoSleepS(THD_STATE_WTSEM);
- msg = ctp->p_u.rdymsg;
- }
- else {
- chSchRescheduleS();
- msg = RDY_OK;
- }
- chSysUnlock();
- return msg;
-}
-#endif /* CH_USE_SEMSW */
-
-#endif /* CH_USE_SEMAPHORES */
-
-/** @} */
diff --git a/os/kernel/src/chsys.c b/os/kernel/src/chsys.c deleted file mode 100644 index a6f1d15ba..000000000 --- a/os/kernel/src/chsys.c +++ /dev/null @@ -1,149 +0,0 @@ -/*
- ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
- 2011,2012,2013 Giovanni Di Sirio.
-
- This file is part of ChibiOS/RT.
-
- ChibiOS/RT is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- ChibiOS/RT is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-/**
- * @file chsys.c
- * @brief System related code.
- *
- * @addtogroup system
- * @details System related APIs and services:
- * - Initialization.
- * - Locks.
- * - Interrupt Handling.
- * - Power Management.
- * - Abnormal Termination.
- * .
- * @{
- */
-
-#include "ch.h"
-
-#if !CH_NO_IDLE_THREAD || defined(__DOXYGEN__)
-/**
- * @brief Idle thread working area.
- */
-WORKING_AREA(_idle_thread_wa, PORT_IDLE_THREAD_STACK_SIZE);
-
-/**
- * @brief This function implements the idle thread infinite loop.
- * @details The function puts the processor in the lowest power mode capable
- * to serve interrupts.<br>
- * The priority is internally set to the minimum system value so
- * that this thread is executed only if there are no other ready
- * threads in the system.
- *
- * @param[in] p the thread parameter, unused in this scenario
- */
-void _idle_thread(void *p) {
-
- (void)p;
- chRegSetThreadName("idle");
- while (TRUE) {
- port_wait_for_interrupt();
- IDLE_LOOP_HOOK();
- }
-}
-#endif /* CH_NO_IDLE_THREAD */
-
-/**
- * @brief ChibiOS/RT initialization.
- * @details After executing this function the current instructions stream
- * becomes the main thread.
- * @pre Interrupts must be still disabled when @p chSysInit() is invoked
- * and are internally enabled.
- * @post The main thread is created with priority @p NORMALPRIO.
- * @note This function has special, architecture-dependent, requirements,
- * see the notes into the various port reference manuals.
- *
- * @special
- */
-void chSysInit(void) {
- static Thread mainthread;
-#if CH_DBG_ENABLE_STACK_CHECK
- extern stkalign_t __main_thread_stack_base__;
-#endif
-
- port_init();
- _scheduler_init();
- _vt_init();
-#if CH_USE_MEMCORE
- _core_init();
-#endif
-#if CH_USE_HEAP
- _heap_init();
-#endif
-#if CH_DBG_ENABLE_TRACE
- _trace_init();
-#endif
-
- /* Now this instructions flow becomes the main thread.*/
- setcurrp(_thread_init(&mainthread, NORMALPRIO));
- currp->p_state = THD_STATE_CURRENT;
-#if CH_DBG_ENABLE_STACK_CHECK
- /* This is a special case because the main thread Thread structure is not
- adjacent to its stack area.*/
- currp->p_stklimit = &__main_thread_stack_base__;
-#endif
- chSysEnable();
-
- /* Note, &ch_debug points to the string "main" if the registry is
- active, else the parameter is ignored.*/
- chRegSetThreadName((const char *)&ch_debug);
-
-#if !CH_NO_IDLE_THREAD
- /* This thread has the lowest priority in the system, its role is just to
- serve interrupts in its context while keeping the lowest energy saving
- mode compatible with the system status.*/
- chThdCreateStatic(_idle_thread_wa, sizeof(_idle_thread_wa), IDLEPRIO,
- (tfunc_t)_idle_thread, NULL);
-#endif
-}
-
-/**
- * @brief Handles time ticks for round robin preemption and timer increments.
- * @details Decrements the remaining time quantum of the running thread
- * and preempts it when the quantum is used up. Increments system
- * time and manages the timers.
- * @note The frequency of the timer determines the system tick granularity
- * and, together with the @p CH_TIME_QUANTUM macro, the round robin
- * interval.
- *
- * @iclass
- */
-void chSysTimerHandlerI(void) {
-
- chDbgCheckClassI();
-
-#if CH_TIME_QUANTUM > 0
- /* Running thread has not used up quantum yet? */
- if (currp->p_preempt > 0)
- /* Decrement remaining quantum.*/
- currp->p_preempt--;
-#endif
-#if CH_DBG_THREADS_PROFILING
- currp->p_time++;
-#endif
- chVTDoTickI();
-#if defined(SYSTEM_TICK_EVENT_HOOK)
- SYSTEM_TICK_EVENT_HOOK();
-#endif
-}
-
-/** @} */
diff --git a/os/kernel/src/chthreads.c b/os/kernel/src/chthreads.c deleted file mode 100644 index 9f6973c90..000000000 --- a/os/kernel/src/chthreads.c +++ /dev/null @@ -1,436 +0,0 @@ -/*
- ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
- 2011,2012,2013 Giovanni Di Sirio.
-
- This file is part of ChibiOS/RT.
-
- ChibiOS/RT is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- ChibiOS/RT is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-/**
- * @file chthreads.c
- * @brief Threads code.
- *
- * @addtogroup threads
- * @details Threads related APIs and services.
- *
- * <h2>Operation mode</h2>
- * A thread is an abstraction of an independent instructions flow.
- * In ChibiOS/RT a thread is represented by a "C" function owning
- * a processor context, state informations and a dedicated stack
- * area. In this scenario static variables are shared among all
- * threads while automatic variables are local to the thread.<br>
- * Operations defined for threads:
- * - <b>Create</b>, a thread is started on the specified thread
- * function. This operation is available in multiple variants,
- * both static and dynamic.
- * - <b>Exit</b>, a thread terminates by returning from its top
- * level function or invoking a specific API, the thread can
- * return a value that can be retrieved by other threads.
- * - <b>Wait</b>, a thread waits for the termination of another
- * thread and retrieves its return value.
- * - <b>Resume</b>, a thread created in suspended state is started.
- * - <b>Sleep</b>, the execution of a thread is suspended for the
- * specified amount of time or the specified future absolute time
- * is reached.
- * - <b>SetPriority</b>, a thread changes its own priority level.
- * - <b>Yield</b>, a thread voluntarily renounces to its time slot.
- * .
- * The threads subsystem is implicitly included in kernel however
- * some of its part may be excluded by disabling them in @p chconf.h,
- * see the @p CH_USE_WAITEXIT and @p CH_USE_DYNAMIC configuration
- * options.
- * @{
- */
-
-#include "ch.h"
-
-/**
- * @brief Initializes a thread structure.
- * @note This is an internal functions, do not use it in application code.
- *
- * @param[in] tp pointer to the thread
- * @param[in] prio the priority level for the new thread
- * @return The same thread pointer passed as parameter.
- *
- * @notapi
- */
-Thread *_thread_init(Thread *tp, tprio_t prio) {
-
- tp->p_prio = prio;
- tp->p_state = THD_STATE_SUSPENDED;
- tp->p_flags = THD_MEM_MODE_STATIC;
-#if CH_TIME_QUANTUM > 0
- tp->p_preempt = CH_TIME_QUANTUM;
-#endif
-#if CH_USE_MUTEXES
- tp->p_realprio = prio;
- tp->p_mtxlist = NULL;
-#endif
-#if CH_USE_EVENTS
- tp->p_epending = 0;
-#endif
-#if CH_DBG_THREADS_PROFILING
- tp->p_time = 0;
-#endif
-#if CH_USE_DYNAMIC
- tp->p_refs = 1;
-#endif
-#if CH_USE_REGISTRY
- tp->p_name = NULL;
- REG_INSERT(tp);
-#endif
-#if CH_USE_WAITEXIT
- list_init(&tp->p_waiting);
-#endif
-#if CH_USE_MESSAGES
- queue_init(&tp->p_msgqueue);
-#endif
-#if CH_DBG_ENABLE_STACK_CHECK
- tp->p_stklimit = (stkalign_t *)(tp + 1);
-#endif
-#if defined(THREAD_EXT_INIT_HOOK)
- THREAD_EXT_INIT_HOOK(tp);
-#endif
- return tp;
-}
-
-#if CH_DBG_FILL_THREADS || defined(__DOXYGEN__)
-/**
- * @brief Memory fill utility.
- *
- * @param[in] startp first address to fill
- * @param[in] endp last address to fill +1
- * @param[in] v filler value
- *
- * @notapi
- */
-void _thread_memfill(uint8_t *startp, uint8_t *endp, uint8_t v) {
-
- while (startp < endp)
- *startp++ = v;
-}
-#endif /* CH_DBG_FILL_THREADS */
-
-/**
- * @brief Creates a new thread into a static memory area.
- * @details The new thread is initialized but not inserted in the ready list,
- * the initial state is @p THD_STATE_SUSPENDED.
- * @post The initialized thread can be subsequently started by invoking
- * @p chThdResume(), @p chThdResumeI() or @p chSchWakeupS()
- * depending on the execution context.
- * @note A thread can terminate by calling @p chThdExit() or by simply
- * returning from its main function.
- * @note Threads created using this function do not obey to the
- * @p CH_DBG_FILL_THREADS debug option because it would keep
- * the kernel locked for too much time.
- *
- * @param[out] wsp pointer to a working area dedicated to the thread stack
- * @param[in] size size of the working area
- * @param[in] prio the priority level for the new thread
- * @param[in] pf the thread function
- * @param[in] arg an argument passed to the thread function. It can be
- * @p NULL.
- * @return The pointer to the @p Thread structure allocated for
- * the thread into the working space area.
- *
- * @iclass
- */
-Thread *chThdCreateI(void *wsp, size_t size,
- tprio_t prio, tfunc_t pf, void *arg) {
- /* Thread structure is laid out in the lower part of the thread workspace.*/
- Thread *tp = wsp;
-
- chDbgCheckClassI();
-
- chDbgCheck((wsp != NULL) && (size >= THD_WA_SIZE(0)) &&
- (prio <= HIGHPRIO) && (pf != NULL),
- "chThdCreateI");
- SETUP_CONTEXT(wsp, size, pf, arg);
- return _thread_init(tp, prio);
-}
-
-/**
- * @brief Creates a new thread into a static memory area.
- * @note A thread can terminate by calling @p chThdExit() or by simply
- * returning from its main function.
- *
- * @param[out] wsp pointer to a working area dedicated to the thread stack
- * @param[in] size size of the working area
- * @param[in] prio the priority level for the new thread
- * @param[in] pf the thread function
- * @param[in] arg an argument passed to the thread function. It can be
- * @p NULL.
- * @return The pointer to the @p Thread structure allocated for
- * the thread into the working space area.
- *
- * @api
- */
-Thread *chThdCreateStatic(void *wsp, size_t size,
- tprio_t prio, tfunc_t pf, void *arg) {
- Thread *tp;
-
-#if CH_DBG_FILL_THREADS
- _thread_memfill((uint8_t *)wsp,
- (uint8_t *)wsp + sizeof(Thread),
- CH_THREAD_FILL_VALUE);
- _thread_memfill((uint8_t *)wsp + sizeof(Thread),
- (uint8_t *)wsp + size,
- CH_STACK_FILL_VALUE);
-#endif
- chSysLock();
- chSchWakeupS(tp = chThdCreateI(wsp, size, prio, pf, arg), RDY_OK);
- chSysUnlock();
- return tp;
-}
-
-/**
- * @brief Changes the running thread priority level then reschedules if
- * necessary.
- * @note The function returns the real thread priority regardless of the
- * current priority that could be higher than the real priority
- * because the priority inheritance mechanism.
- *
- * @param[in] newprio the new priority level of the running thread
- * @return The old priority level.
- *
- * @api
- */
-tprio_t chThdSetPriority(tprio_t newprio) {
- tprio_t oldprio;
-
- chDbgCheck(newprio <= HIGHPRIO, "chThdSetPriority");
-
- chSysLock();
-#if CH_USE_MUTEXES
- oldprio = currp->p_realprio;
- if ((currp->p_prio == currp->p_realprio) || (newprio > currp->p_prio))
- currp->p_prio = newprio;
- currp->p_realprio = newprio;
-#else
- oldprio = currp->p_prio;
- currp->p_prio = newprio;
-#endif
- chSchRescheduleS();
- chSysUnlock();
- return oldprio;
-}
-
-/**
- * @brief Resumes a suspended thread.
- * @pre The specified thread pointer must refer to an initialized thread
- * in the @p THD_STATE_SUSPENDED state.
- * @post The specified thread is immediately started or put in the ready
- * list depending on the relative priority levels.
- * @note Use this function to start threads created with @p chThdCreateI().
- *
- * @param[in] tp pointer to the thread
- * @return The pointer to the thread.
- *
- * @api
- */
-Thread *chThdResume(Thread *tp) {
-
- chSysLock();
- chDbgAssert(tp->p_state == THD_STATE_SUSPENDED,
- "chThdResume(), #1",
- "thread not in THD_STATE_SUSPENDED state");
- chSchWakeupS(tp, RDY_OK);
- chSysUnlock();
- return tp;
-}
-
-/**
- * @brief Requests a thread termination.
- * @pre The target thread must be written to invoke periodically
- * @p chThdShouldTerminate() and terminate cleanly if it returns
- * @p TRUE.
- * @post The specified thread will terminate after detecting the termination
- * condition.
- *
- * @param[in] tp pointer to the thread
- *
- * @api
- */
-void chThdTerminate(Thread *tp) {
-
- chSysLock();
- tp->p_flags |= THD_TERMINATE;
- chSysUnlock();
-}
-
-/**
- * @brief Suspends the invoking thread for the specified time.
- *
- * @param[in] time the delay in system ticks, the special values are
- * handled as follow:
- * - @a TIME_INFINITE the thread enters an infinite sleep
- * state.
- * - @a TIME_IMMEDIATE this value is not allowed.
- * .
- *
- * @api
- */
-void chThdSleep(systime_t time) {
-
- chDbgCheck(time != TIME_IMMEDIATE, "chThdSleep");
-
- chSysLock();
- chThdSleepS(time);
- chSysUnlock();
-}
-
-/**
- * @brief Suspends the invoking thread until the system time arrives to the
- * specified value.
- *
- * @param[in] time absolute system time
- *
- * @api
- */
-void chThdSleepUntil(systime_t time) {
-
- chSysLock();
- if ((time -= chTimeNow()) > 0)
- chThdSleepS(time);
- chSysUnlock();
-}
-
-/**
- * @brief Yields the time slot.
- * @details Yields the CPU control to the next thread in the ready list with
- * equal priority, if any.
- *
- * @api
- */
-void chThdYield(void) {
-
- chSysLock();
- chSchDoYieldS();
- chSysUnlock();
-}
-
-/**
- * @brief Terminates the current thread.
- * @details The thread goes in the @p THD_STATE_FINAL state holding the
- * specified exit status code, other threads can retrieve the
- * exit status code by invoking the function @p chThdWait().
- * @post Eventual code after this function will never be executed,
- * this function never returns. The compiler has no way to
- * know this so do not assume that the compiler would remove
- * the dead code.
- *
- * @param[in] msg thread exit code
- *
- * @api
- */
-void chThdExit(msg_t msg) {
-
- chSysLock();
- chThdExitS(msg);
- /* The thread never returns here.*/
-}
-
-/**
- * @brief Terminates the current thread.
- * @details The thread goes in the @p THD_STATE_FINAL state holding the
- * specified exit status code, other threads can retrieve the
- * exit status code by invoking the function @p chThdWait().
- * @post Eventual code after this function will never be executed,
- * this function never returns. The compiler has no way to
- * know this so do not assume that the compiler would remove
- * the dead code.
- *
- * @param[in] msg thread exit code
- *
- * @sclass
- */
-void chThdExitS(msg_t msg) {
- Thread *tp = currp;
-
- tp->p_u.exitcode = msg;
-#if defined(THREAD_EXT_EXIT_HOOK)
- THREAD_EXT_EXIT_HOOK(tp);
-#endif
-#if CH_USE_WAITEXIT
- while (notempty(&tp->p_waiting))
- chSchReadyI(list_remove(&tp->p_waiting));
-#endif
-#if CH_USE_REGISTRY
- /* Static threads are immediately removed from the registry because
- there is no memory to recover.*/
- if ((tp->p_flags & THD_MEM_MODE_MASK) == THD_MEM_MODE_STATIC)
- REG_REMOVE(tp);
-#endif
- chSchGoSleepS(THD_STATE_FINAL);
- /* The thread never returns here.*/
- chDbgAssert(FALSE, "chThdExitS(), #1", "zombies apocalypse");
-}
-
-#if CH_USE_WAITEXIT || defined(__DOXYGEN__)
-/**
- * @brief Blocks the execution of the invoking thread until the specified
- * thread terminates then the exit code is returned.
- * @details This function waits for the specified thread to terminate then
- * decrements its reference counter, if the counter reaches zero then
- * the thread working area is returned to the proper allocator.<br>
- * The memory used by the exited thread is handled in different ways
- * depending on the API that spawned the thread:
- * - If the thread was spawned by @p chThdCreateStatic() or by
- * @p chThdCreateI() then nothing happens and the thread working
- * area is not released or modified in any way. This is the
- * default, totally static, behavior.
- * - If the thread was spawned by @p chThdCreateFromHeap() then
- * the working area is returned to the system heap.
- * - If the thread was spawned by @p chThdCreateFromMemoryPool()
- * then the working area is returned to the owning memory pool.
- * .
- * @pre The configuration option @p CH_USE_WAITEXIT must be enabled in
- * order to use this function.
- * @post Enabling @p chThdWait() requires 2-4 (depending on the
- * architecture) extra bytes in the @p Thread structure.
- * @post After invoking @p chThdWait() the thread pointer becomes invalid
- * and must not be used as parameter for further system calls.
- * @note If @p CH_USE_DYNAMIC is not specified this function just waits for
- * the thread termination, no memory allocators are involved.
- *
- * @param[in] tp pointer to the thread
- * @return The exit code from the terminated thread.
- *
- * @api
- */
-msg_t chThdWait(Thread *tp) {
- msg_t msg;
-
- chDbgCheck(tp != NULL, "chThdWait");
-
- chSysLock();
- chDbgAssert(tp != currp, "chThdWait(), #1", "waiting self");
-#if CH_USE_DYNAMIC
- chDbgAssert(tp->p_refs > 0, "chThdWait(), #2", "not referenced");
-#endif
- if (tp->p_state != THD_STATE_FINAL) {
- list_insert(currp, &tp->p_waiting);
- chSchGoSleepS(THD_STATE_WTEXIT);
- }
- msg = tp->p_u.exitcode;
- chSysUnlock();
-#if CH_USE_DYNAMIC
- chThdRelease(tp);
-#endif
- return msg;
-}
-#endif /* CH_USE_WAITEXIT */
-
-/** @} */
diff --git a/os/kernel/src/chvt.c b/os/kernel/src/chvt.c deleted file mode 100644 index f2d6cd697..000000000 --- a/os/kernel/src/chvt.c +++ /dev/null @@ -1,114 +0,0 @@ -/*
- ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
- 2011,2012,2013 Giovanni Di Sirio.
-
- This file is part of ChibiOS/RT.
-
- ChibiOS/RT is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- ChibiOS/RT is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-/**
- * @file chvt.c
- * @brief Time and Virtual Timers related code.
- *
- * @addtogroup time
- * @details Time and Virtual Timers related APIs and services.
- * @{
- */
-
-#include "ch.h"
-
-/**
- * @brief Virtual timers delta list header.
- */
-VTList vtlist;
-
-/**
- * @brief Virtual Timers initialization.
- * @note Internal use only.
- *
- * @notapi
- */
-void _vt_init(void) {
-
- vtlist.vt_next = vtlist.vt_prev = (void *)&vtlist;
- vtlist.vt_time = (systime_t)-1;
- vtlist.vt_systime = 0;
-}
-
-/**
- * @brief Enables a virtual timer.
- * @note The associated function is invoked from interrupt context.
- *
- * @param[out] vtp the @p VirtualTimer structure pointer
- * @param[in] time the number of ticks before the operation timeouts, the
- * special values are handled as follow:
- * - @a TIME_INFINITE is allowed but interpreted as a
- * normal time specification.
- * - @a TIME_IMMEDIATE this value is not allowed.
- * .
- * @param[in] vtfunc the timer callback function. After invoking the
- * callback the timer is disabled and the structure can
- * be disposed or reused.
- * @param[in] par a parameter that will be passed to the callback
- * function
- *
- * @iclass
- */
-void chVTSetI(VirtualTimer *vtp, systime_t time, vtfunc_t vtfunc, void *par) {
- VirtualTimer *p;
-
- chDbgCheckClassI();
- chDbgCheck((vtp != NULL) && (vtfunc != NULL) && (time != TIME_IMMEDIATE),
- "chVTSetI");
-
- vtp->vt_par = par;
- vtp->vt_func = vtfunc;
- p = vtlist.vt_next;
- while (p->vt_time < time) {
- time -= p->vt_time;
- p = p->vt_next;
- }
-
- vtp->vt_prev = (vtp->vt_next = p)->vt_prev;
- vtp->vt_prev->vt_next = p->vt_prev = vtp;
- vtp->vt_time = time;
- if (p != (void *)&vtlist)
- p->vt_time -= time;
-}
-
-/**
- * @brief Disables a Virtual Timer.
- * @note The timer MUST be active when this function is invoked.
- *
- * @param[in] vtp the @p VirtualTimer structure pointer
- *
- * @iclass
- */
-void chVTResetI(VirtualTimer *vtp) {
-
- chDbgCheckClassI();
- chDbgCheck(vtp != NULL, "chVTResetI");
- chDbgAssert(vtp->vt_func != NULL,
- "chVTResetI(), #1",
- "timer not set or already triggered");
-
- if (vtp->vt_next != (void *)&vtlist)
- vtp->vt_next->vt_time += vtp->vt_time;
- vtp->vt_prev->vt_next = vtp->vt_next;
- vtp->vt_next->vt_prev = vtp->vt_prev;
- vtp->vt_func = (vtfunc_t)NULL;
-}
-
-/** @} */
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